When I was a kid, my favorite thing to do was "jam." By that, I mean I would cram myself and a few friends into a bedroom, we would all take turns playing new riffs we came up with, and eventually a rough version of a song would emerge. It was necessary to our musical development, and was a dang good time.
Skip forward a few years, and I am playing with established recording artists. This time, I am in a real recording studio. The creative process went down far different. The focus was on the arrangement of the song, and not the "riff."
I say all this in the context of a band rehearsal: the creative band rehearsal. I think it is very important to break up the process BEFORE the entire band shows up for rehearsal. Pick a producer, or band leader, to come up with an arrangement. Be careful about where the guitar, keys, or drums do their fills. Ultimately, it will help you be a better band.
If you want to see what a great rehearsal should feel like, give us a call at 713-396-2473 or visit us on the web at bandpracticerooms.com!