[Bluesman_s]

Hey bluesman here
our band is in the weekend jamming stage but only having two guitarists and a keyboard player has hinderered our options in what to play.
needless to say we are sick of standard 12bar eg
I---|I---|I---|I---|
IV--|IV-|I---|I---|
V---|IV-|I---|V--|

So the question is anyone know any good, different, progressions we can jam to?
or a song with two guitars and a keyboard/piano
sparky's keyboard has about 50 drum tracks but there all in 4/4
basicly we need some backing tracks that we can play while someone takes lead.
thanks.