Bard song which is a DS
Psalm of Purity needs to have cure poison counters on it. I believe it removes 3-6 counters of poison per pulse.
Psalm of Vitality is a damage shield but should also remove disease counters.
Essentially thats how bards cured in classic was through that DS song. It wasn't later till they removed the cure function of these songs and the created the Cure disease and poison song.
So those songs need to be curing as well as providing a Damage Shield.
ALSO
Kelin's Lucid Lullaby should be AREA EFFECT mez in classic.
You can read some of the alla comments and players are talking about its huge power in gathering and sustaining a whole zone of mobs. great for powerleveling I might add. so... make sure you make alot of bards!!!