Like, you did get to see them and can brag about it to people who were in nappies when it happened. Old persons thread, probably.
Cocteau Twins, Jeff Buckley, Cardiacs, Nirvana, Velvet Underground. First five that come to mind.

Top five I haven't seen for some reason or other, idk why.
Dead Can Dance, Portishead, David Byrne, Cave, Tears for Fears.