I have 3 gigs coming up with 3 different bands. I find that when I practice one set of songs I begin to forget another. It doesnt happen that often but I wonder how people can rattle off a a huge bunch of tunes without taking a lot of liberties with details. I know the answer is practice but, my bands have setlists we cant hit all songs all the time, and I have trouble hitting all tunes at home too. Gonna have to write (rewrite) out charts I know.