openapi: 3.0.3
info:
  title: Qobuz Music API
  description: >-
    The Qobuz Music API (v0.2) is a REST interface served at
    https://www.qobuz.com/api.json/0.2 returning JSON responses. It covers
    user authentication (email/password or token-based with MD5-hashed
    credentials plus app_id and app_secret), catalog operations (search
    albums, artists, tracks, and playlists), detailed metadata retrieval,
    streaming and download URL generation, and user account management.

    API access requires a valid Qobuz subscription (Studio or Sublime) and
    partner credentials (app_id and app_secret) issued by Qobuz. Contact
    api@qobuz.com to request access.

    Request signing for protected endpoints (e.g. track/getFileUrl) uses an
    MD5 hash of concatenated path parameters, a unix timestamp, and the
    app_secret.
  version: '0.2'
  contact:
    name: Qobuz API Support
    email: api@qobuz.com
    url: https://www.qobuz.com/us-en/discover/apps-partners
  termsOfService: http://static.qobuz.com/apps/api/QobuzAPI-TermsofUse.pdf
  license:
    name: Qobuz API Terms of Use
    url: http://static.qobuz.com/apps/api/QobuzAPI-TermsofUse.pdf

servers:
  - url: https://www.qobuz.com/api.json/0.2
    description: Qobuz REST API v0.2

security:
  - AppId: []

tags:
  - name: Authentication
    description: User login and session management
  - name: Albums
    description: Album metadata retrieval and search
  - name: Artists
    description: Artist metadata retrieval and search
  - name: Tracks
    description: Track metadata, streaming, and download URL generation
  - name: Playlists
    description: Playlist retrieval and search
  - name: Search
    description: Cross-catalog search across all content types

paths:
  /user/login:
    get:
      operationId: userLogin
      summary: Authenticate a user
      description: >-
        Authenticates a user with email and password. Returns a
        user_auth_token that must be supplied in the X-User-Auth-Token
        header for protected endpoints. The password should be sent as
        an MD5 hash. Requires app_id.
      tags:
        - Authentication
      parameters:
        - name: app_id
          in: query
          required: true
          description: Your Qobuz application identifier
          schema:
            type: string
        - name: email
          in: query
          required: true
          description: User's email address
          schema:
            type: string
            format: email
        - name: password
          in: query
          required: true
          description: MD5 hash of the user's password
          schema:
            type: string
      responses:
        '200':
          description: Successful authentication
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LoginResponse'
        '400':
          description: Bad request or invalid credentials
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized — invalid app_id or credentials
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /album/get:
    get:
      operationId: albumGet
      summary: Retrieve album metadata
      description: >-
        Returns detailed metadata for a single album including track
        listing, artist, label, genre, audio quality details, and
        availability flags.
      tags:
        - Albums
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: album_id
          in: query
          required: true
          schema:
            type: string
          description: Qobuz album identifier
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 1200
          description: Maximum number of tracks to include in the response
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset for track listings
        - name: extra
          in: query
          required: false
          schema:
            type: string
          description: Comma-separated list of additional fields to include (e.g. tracks,artist)
      security:
        - AppId: []
        - UserAuthToken: []
      responses:
        '200':
          description: Album metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Album'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Album not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /album/search:
    get:
      operationId: albumSearch
      summary: Search albums
      description: >-
        Search the Qobuz catalog for albums matching the supplied query
        string. Returns a paginated list of Album objects.
      tags:
        - Albums
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: query
          in: query
          required: true
          schema:
            type: string
          description: Search query string
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
          description: Maximum number of results to return
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
      security:
        - AppId: []
      responses:
        '200':
          description: Paginated list of albums
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AlbumList'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /artist/get:
    get:
      operationId: artistGet
      summary: Retrieve artist metadata
      description: >-
        Returns detailed metadata for a single artist including biography,
        image, discography summary, and similar artist IDs.
      tags:
        - Artists
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: artist_id
          in: query
          required: true
          schema:
            type: integer
          description: Qobuz artist identifier
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
          description: Maximum number of albums to include
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
        - name: extra
          in: query
          required: false
          schema:
            type: string
          description: Comma-separated additional fields (e.g. albums,biography)
        - name: sort
          in: query
          required: false
          schema:
            type: string
          description: Sort field for album list
        - name: order
          in: query
          required: false
          schema:
            type: string
            enum:
              - asc
              - desc
          description: Sort order
      security:
        - AppId: []
      responses:
        '200':
          description: Artist metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Artist'
        '404':
          description: Artist not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /artist/search:
    get:
      operationId: artistSearch
      summary: Search artists
      description: >-
        Search the Qobuz catalog for artists matching the supplied query
        string. Returns a paginated list of Artist objects.
      tags:
        - Artists
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: query
          in: query
          required: true
          schema:
            type: string
          description: Search query string
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
          description: Maximum number of results to return
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
        - name: sort
          in: query
          required: false
          schema:
            type: string
          description: Sort field
        - name: order
          in: query
          required: false
          schema:
            type: string
            enum:
              - asc
              - desc
          description: Sort order
      security:
        - AppId: []
      responses:
        '200':
          description: Paginated list of artists
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ArtistList'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /track/get:
    get:
      operationId: trackGet
      summary: Retrieve track metadata
      description: >-
        Returns detailed metadata for a single track including ISRC,
        audio quality specifications, performer details, and
        availability flags.
      tags:
        - Tracks
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: track_id
          in: query
          required: true
          schema:
            type: integer
          description: Qobuz track identifier
      security:
        - AppId: []
      responses:
        '200':
          description: Track metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Track'
        '404':
          description: Track not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /track/search:
    get:
      operationId: trackSearch
      summary: Search tracks
      description: >-
        Search the Qobuz catalog for tracks matching the supplied query
        string. Returns a paginated list of Track objects.
      tags:
        - Tracks
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: query
          in: query
          required: true
          schema:
            type: string
          description: Search query string
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
          description: Maximum number of results to return
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
      security:
        - AppId: []
      responses:
        '200':
          description: Paginated list of tracks
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TrackList'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /track/getFileUrl:
    get:
      operationId: trackGetFileUrl
      summary: Generate streaming or download URL for a track
      description: >-
        Generates an authenticated streaming or download URL for a track
        in the specified audio format. Requires a valid user_auth_token
        (X-User-Auth-Token header) and a signed request.

        The request_sig is computed as:
          MD5(intent + "trackid" + track_id + "formatid" + format_id + request_ts + app_secret)

        Format IDs:
          5  = MP3 320 kbps CBR
          6  = FLAC 16-bit/44.1 kHz (CD quality)
          7  = FLAC 24-bit/96 kHz (Hi-Res)
          27 = FLAC 24-bit/192 kHz (Hi-Res)
      tags:
        - Tracks
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: track_id
          in: query
          required: true
          schema:
            type: integer
          description: Qobuz track identifier
        - name: format_id
          in: query
          required: true
          schema:
            type: integer
            enum:
              - 5
              - 6
              - 7
              - 27
          description: Audio format code (5=MP3-320, 6=FLAC-CD, 7=FLAC-HiRes-96kHz, 27=FLAC-HiRes-192kHz)
        - name: intent
          in: query
          required: true
          schema:
            type: string
            enum:
              - stream
              - download
          description: Intended use — stream or download
        - name: request_ts
          in: query
          required: true
          schema:
            type: integer
          description: Current Unix timestamp used in signature
        - name: request_sig
          in: query
          required: true
          schema:
            type: string
          description: MD5 signature authenticating the request
      security:
        - AppId: []
        - UserAuthToken: []
      responses:
        '200':
          description: Streaming or download URL and audio metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FileUrl'
        '400':
          description: Bad request or invalid signature
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized — invalid or expired auth token
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '403':
          description: Forbidden — subscription does not permit this format
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /playlist/get:
    get:
      operationId: playlistGet
      summary: Retrieve a playlist
      description: >-
        Returns metadata and track listing for a single playlist
        identified by its playlist_id.
      tags:
        - Playlists
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: playlist_id
          in: query
          required: true
          schema:
            type: integer
          description: Qobuz playlist identifier
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 25
          description: Maximum number of tracks to include
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
        - name: extra
          in: query
          required: false
          schema:
            type: string
          description: Comma-separated additional fields (e.g. tracks)
      security:
        - AppId: []
        - UserAuthToken: []
      responses:
        '200':
          description: Playlist metadata and tracks
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Playlist'
        '404':
          description: Playlist not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /playlist/search:
    get:
      operationId: playlistSearch
      summary: Search playlists
      description: >-
        Search the Qobuz catalog for playlists matching the supplied
        query string. Returns a paginated list of Playlist objects.
      tags:
        - Playlists
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: query
          in: query
          required: true
          schema:
            type: string
          description: Search query string
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
          description: Maximum number of results to return
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
      security:
        - AppId: []
      responses:
        '200':
          description: Paginated list of playlists
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PlaylistList'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /catalog/search:
    get:
      operationId: catalogSearch
      summary: Cross-catalog search
      description: >-
        Searches across all content types (albums, artists, tracks,
        playlists, articles, focus, stories) and returns aggregated
        results. Use the limit and offset parameters for pagination
        within each content-type bucket.
      tags:
        - Search
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: query
          in: query
          required: true
          schema:
            type: string
          description: Search query string
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
          description: Maximum number of results per content type
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
        - name: sort
          in: query
          required: false
          schema:
            type: string
          description: Sort field
        - name: order
          in: query
          required: false
          schema:
            type: string
            enum:
              - asc
              - desc
          description: Sort order
      security:
        - AppId: []
      responses:
        '200':
          description: Aggregated search results across content types
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SearchResults'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /favorite/getUserFavorites:
    get:
      operationId: favoriteGetUserFavorites
      summary: Retrieve user favorites
      description: >-
        Returns the authenticated user's favorited albums, artists,
        and tracks. Requires a valid user_auth_token.
      tags:
        - Authentication
      parameters:
        - name: app_id
          in: query
          required: true
          schema:
            type: string
          description: Your Qobuz application identifier
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
          description: Maximum number of results to return
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            default: 0
          description: Pagination offset
        - name: type
          in: query
          required: false
          schema:
            type: string
            enum:
              - albums
              - artists
              - tracks
          description: Filter favorites by content type
      security:
        - AppId: []
        - UserAuthToken: []
      responses:
        '200':
          description: User's favorites
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UserFavorites'
        '401':
          description: Unauthorized — invalid or expired auth token
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

components:
  securitySchemes:
    AppId:
      type: apiKey
      in: query
      name: app_id
      description: Qobuz application identifier issued to partners
    UserAuthToken:
      type: apiKey
      in: header
      name: X-User-Auth-Token
      description: User authentication token obtained from /user/login

  schemas:
    ErrorResponse:
      type: object
      description: Standard error envelope returned by all endpoints on failure
      properties:
        status:
          type: string
          example: error
        code:
          type: integer
          example: 400
        message:
          type: string
          example: Bad Request

    LoginResponse:
      type: object
      description: Response returned by /user/login on successful authentication
      properties:
        user:
          $ref: '#/components/schemas/User'
        user_auth_token:
          type: string
          description: Authentication token to use in X-User-Auth-Token header

    User:
      type: object
      description: Qobuz user account details
      properties:
        id:
          type: integer
        publicId:
          type: string
        email:
          type: string
          format: email
        login:
          type: string
        firstname:
          type: string
        lastname:
          type: string
        display_name:
          type: string
        country_code:
          type: string
          example: US
        language_code:
          type: string
          example: en
        zone:
          type: string
        store:
          type: string
        country:
          type: string
        avatar:
          type: string
          format: uri
        creation_date:
          type: string
        subscription:
          $ref: '#/components/schemas/Subscription'
        credential:
          $ref: '#/components/schemas/Credential'

    Subscription:
      type: object
      description: User subscription details
      properties:
        offer:
          type: string
          description: Subscription plan name (e.g. Studio, Sublime)
        periodicity:
          type: string
          description: Billing period (e.g. monthly, yearly)
        start_date:
          type: string
        end_date:
          type: string

    Credential:
      type: object
      description: User credential / entitlement details
      properties:
        id:
          type: integer
        label:
          type: string
        description:
          type: string
        parameters:
          type: object
          additionalProperties: true

    Image:
      type: object
      description: Set of image URLs at various resolutions
      properties:
        small:
          type: string
          format: uri
        medium:
          type: string
          format: uri
        large:
          type: string
          format: uri
        extralarge:
          type: string
          format: uri
        mega:
          type: string
          format: uri

    Artist:
      type: object
      description: Qobuz artist metadata
      properties:
        id:
          type: integer
        name:
          type: string
        albums_as_primary_artist_count:
          type: integer
        albums_as_primary_composer_count:
          type: integer
        albums_count:
          type: integer
        slug:
          type: string
        picture:
          type: string
          format: uri
        image:
          $ref: '#/components/schemas/Image'
        similar_artist_ids:
          type: array
          items:
            type: integer
        biography:
          $ref: '#/components/schemas/Biography'
        album_last_release:
          $ref: '#/components/schemas/Album'
        albums:
          $ref: '#/components/schemas/AlbumList'

    Biography:
      type: object
      description: Artist biography
      properties:
        summary:
          type: string
        content:
          type: string
        source:
          type: string
        language:
          type: string

    ArtistList:
      type: object
      description: Paginated list of artists
      properties:
        limit:
          type: integer
        offset:
          type: integer
        total:
          type: integer
        items:
          type: array
          items:
            $ref: '#/components/schemas/Artist'

    Genre:
      type: object
      description: Music genre
      properties:
        id:
          type: integer
        name:
          type: string
        slug:
          type: string
        color:
          type: string

    Label:
      type: object
      description: Record label
      properties:
        id:
          type: integer
        name:
          type: string
        slug:
          type: string
        albums_count:
          type: integer

    Track:
      type: object
      description: Qobuz track metadata
      properties:
        id:
          type: integer
        title:
          type: string
        version:
          type: string
        isrc:
          type: string
          description: International Standard Recording Code
        maximum_bit_depth:
          type: integer
          description: Maximum available bit depth (e.g. 16, 24)
        maximum_channel_count:
          type: integer
          description: Number of audio channels
        maximum_sampling_rate:
          type: number
          description: Maximum sampling rate in kHz (e.g. 44.1, 96.0, 192.0)
        performer:
          type: object
          properties:
            id:
              type: integer
            name:
              type: string
        performers:
          type: string
        composer:
          type: object
          properties:
            id:
              type: integer
            name:
              type: string
        copyright:
          type: string
        album:
          $ref: '#/components/schemas/Album'
        track_number:
          type: integer
        media_number:
          type: integer
        release_date_original:
          type: string
        release_date_download:
          type: string
        release_date_stream:
          type: string
        release_date_purchase:
          type: string
        purchasable:
          type: boolean
        streamable:
          type: boolean
        previewable:
          type: boolean
        sampleable:
          type: boolean
        downloadable:
          type: boolean
        displayable:
          type: boolean
        hires:
          type: boolean
        hires_streamable:
          type: boolean
        parental_warning:
          type: boolean
        duration:
          type: integer
          description: Track duration in seconds

    TrackList:
      type: object
      description: Paginated list of tracks
      properties:
        limit:
          type: integer
        offset:
          type: integer
        total:
          type: integer
        items:
          type: array
          items:
            $ref: '#/components/schemas/Track'

    FileUrl:
      type: object
      description: Streaming or download URL for a track
      properties:
        track_id:
          type: integer
        duration:
          type: integer
          description: Track duration in seconds
        url:
          type: string
          format: uri
          description: Authenticated CDN URL for the audio file
        format_id:
          type: integer
          description: Audio format code (5=MP3-320, 6=FLAC-CD, 7=FLAC-HiRes-96kHz, 27=FLAC-HiRes-192kHz)
        mime_type:
          type: string
          example: audio/flac
        sampling_rate:
          type: number
          description: Sampling rate in kHz
        bit_depth:
          type: integer
          description: Bit depth (16 or 24)
        blob:
          type: string
          description: Opaque CDN delivery token

    Album:
      type: object
      description: Qobuz album metadata
      properties:
        id:
          type: string
        qobuz_id:
          type: integer
        title:
          type: string
        subtitle:
          type: string
        version:
          type: string
        slug:
          type: string
        url:
          type: string
          format: uri
        released_at:
          type: integer
          description: Unix timestamp of release
        release_date_original:
          type: string
        release_date_download:
          type: string
        release_date_stream:
          type: string
        maximum_bit_depth:
          type: integer
        maximum_sampling_rate:
          type: number
        maximum_channel_count:
          type: integer
        hires:
          type: boolean
        hires_streamable:
          type: boolean
        purchasable:
          type: boolean
        streamable:
          type: boolean
        previewable:
          type: boolean
        sampleable:
          type: boolean
        downloadable:
          type: boolean
        displayable:
          type: boolean
        parental_warning:
          type: boolean
        artist:
          $ref: '#/components/schemas/Artist'
        label:
          $ref: '#/components/schemas/Label'
        genre:
          $ref: '#/components/schemas/Genre'
        description:
          type: string
        description_language:
          type: string
        catchline:
          type: string
        copyright:
          type: string
        recording_information:
          type: string
        upc:
          type: string
          description: Universal Product Code
        popularity:
          type: number
        tracks_count:
          type: integer
        media_count:
          type: integer
        duration:
          type: integer
          description: Total album duration in seconds
        tracks:
          $ref: '#/components/schemas/TrackList'
        image:
          $ref: '#/components/schemas/Image'

    AlbumList:
      type: object
      description: Paginated list of albums
      properties:
        limit:
          type: integer
        offset:
          type: integer
        total:
          type: integer
        items:
          type: array
          items:
            $ref: '#/components/schemas/Album'

    Playlist:
      type: object
      description: Qobuz playlist metadata and tracks
      properties:
        id:
          type: integer
        name:
          type: string
        slug:
          type: string
        description:
          type: string
        created_at:
          type: integer
          description: Unix timestamp of creation
        updated_at:
          type: integer
          description: Unix timestamp of last update
        public_at:
          type: integer
        duration:
          type: integer
          description: Total duration in seconds
        tracks_count:
          type: integer
        users_count:
          type: integer
        is_public:
          type: boolean
        is_collaborative:
          type: boolean
        is_featured:
          type: boolean
        owner:
          type: object
          properties:
            id:
              type: integer
            name:
              type: string
        images:
          type: array
          items:
            type: string
            format: uri
        images150:
          type: array
          items:
            type: string
            format: uri
        images300:
          type: array
          items:
            type: string
            format: uri
        featured_artists:
          type: array
          items:
            $ref: '#/components/schemas/Artist'
        genres:
          type: array
          items:
            $ref: '#/components/schemas/Genre'
        stores:
          type: array
          items:
            type: string
        tracks:
          type: array
          items:
            $ref: '#/components/schemas/Track'
        tracks_ids:
          type: array
          items:
            type: integer

    PlaylistList:
      type: object
      description: Paginated list of playlists
      properties:
        limit:
          type: integer
        offset:
          type: integer
        total:
          type: integer
        items:
          type: array
          items:
            $ref: '#/components/schemas/Playlist'

    SearchResults:
      type: object
      description: Aggregated search results across all content types
      properties:
        query:
          type: string
        albums:
          $ref: '#/components/schemas/AlbumList'
        artists:
          $ref: '#/components/schemas/ArtistList'
        tracks:
          $ref: '#/components/schemas/TrackList'
        playlists:
          $ref: '#/components/schemas/PlaylistList'

    UserFavorites:
      type: object
      description: Authenticated user's favorited content
      properties:
        albums:
          $ref: '#/components/schemas/AlbumList'
        artists:
          $ref: '#/components/schemas/ArtistList'
        tracks:
          $ref: '#/components/schemas/TrackList'