What Bard songs/buff don’t stack?

[Kerr]

Hi guys I’m a 33 bard and have been looking around for some information I can’t seem to find.

I want to know what songs do not stack with other classes buffs.
Is there a list of spells that bard songs stack with or more importantly do not stack with? I’d hate to be wasting a song in my rotation if without my knowledge it’s getting cancelled out by another party members buff.