Well I couldn't help myself, I had to try it. I was camping the Savant and
Cavalier (Sav/Cav) last night with a competent group. We had a Cleric,
Shaman, Ranger, Warrior, Magician and Myself (39th bard). Pretty balanced.
We were pulling both rooms to the Savant area and fighting there. I was
brought on as mana pump but my team was very pleasantly surprised to find
that I could twist three songs, melee fairly effectively and perform crowd
control. We were so successful that we cleared all the way from the Sav
room to the Greater Ice Bone Skeletons (GIBS) and started pulling those.
After having to alternately Pixie Strike two GIBS during a 10+ minute battle
and having resists and missed notes allow them break out and freeze me from
time to time I decided I'd dust off Lullaby and try it. Heh. Never again.
I didn't die thanks to the Cleric and Shaman, but Lullaby had virtually no
effect other than Taunt. If they're mezzed with Lullaby, it's so brief as
to be negligible. GZ would probably remind me that "higher level mobs have
a greater chance of resisting", which is fine I suppose, but damn - give me
resist messages.

Crier Sharpsong - 39th song bard on Fennin Ro