“I haven’t done heroin,” Bill Maher once said. “I wouldn’t recommend heroin. But it hasn’t exactly hurt my record collection.” Maher might be going a little far there (heroin is an evil drug), but his point stands that if no artist had ever done an illegal drug, music might be pretty boring. Bob Dylan wrote many of his greatest songs on speed, and when he introduced the Beatles to marijuana, it forever changed their approach to music.

That’s not to say that musicians should be stoned 24/7, though. Concerts are rarely great when the performers are fucked up beyond belief. Here’s a look at 10 famous performances when we know beyond any reasonable doubt that the person onstage was stoned or impossibly drunk.