Well, heres the thing: I committed with a friends band to play their gig three weeks from now. The thing is that I cant really play well but Im excited for have this opportunity of playing live for first time. I dont have that much time and want to get on that show in a good shape; its my main goal nowadays. The band is a blues band, so Ill have to figure out how to play the blues good (or at least be a decent player) in a few weeks. Besides the listening to the greats (vital part which Im already covering), what do you recommend me to do?