The "rehearsal rules" thread got me thinking: most of the things that go wrong musically on gigs usually can be traced back to rehearsal. Which are the usual problems and how can they be solved? I can think of two: Song sounds like crap because it's either too high or too low for the singer: - Solution: Learn to transpose! It's pretty elementary, but some folks think a song's key center is set in stone! The other one is: everyone's deaf at the end of the rehearsal/gig: I think really good bands have a sense of awareness about their volume and can keep it consistent from venue to venue. Rocking out is fine, but if there are more people outside than inside at your gig, it might be because people don't want their ears to bleed! Any other suggestions?