Yeah, I know the feeling. I once went to see the Chicago Symphony Orchestra play The Planets - and fell asleep during Mars. /o\ I had had something like four tests that week and was going on two hours' sleep.

It was originally SGA (John/Rodney), I'm 70k into that part of it, and now there's an offshoot Losers universe (which is Cougar/Jensen). There are lots of other references in there, though, so it's sort of... My Big Music AU.