Playing songs during a pull is a risk in hate, the reason being the
potential for trains. If you've got a good pull team, you don't have to
worry about trains after the first patrollers and 2 houses are cleared.
What actually happens though is if a pull comes in, and you are doing
party buffs and a monster trains in late, look at it's aggro list..'I
see 24 people here, I hate them all, but I see 3 people that are buffing
the rest like mad, boy this pisses me off!' And those 3 would be bards
playing Verses of Victory for example. So that monster will run in and
beat each bard to death if it can. 1 monster generally isn't going to
kill you so fast that your cleric can't heal you (unless it's an
abhorrent/scareling with some nice backstabs) but more likely than not a
train in Hate will consist of 4-5 monsters, and they will kill you from
2000 hp to dead in about 2 seconds. What I'd recommend for both Hate and
Fear, is to not play any party buffs until enough time has elapsed that
any train coming would have arrived (say 30 seconds after the pull comes
in).
A bard in the puller's group can be very good and bad, it depends on the
bard's skill level and experience. Pros are, the puller's team
cleric/clerics will also be better off on mana, but there are several
ways for a bard to pull a train into the group if they don't know when
to buff and when not to. I'm not sure if anyone still uses a single
puller in Hate, we always use a pull team. It's not the primary puller
that soaks up all the healing mana, it's the secondary puller that
brings it into a room.

One other tidbit - aggro plays a large part in these zones on your
level. so if you go up at L46 play very conservatively. Oh, and expect
to die several times. Even in the best groups and the most skilled bards
are going to leave a few corpses. ;)

Ariell Thunderwolf, Karana