I think I'm going to leave my band. I'm having some severe musical differences with the keyboardist in my band, who happens to be the primary songwriter. He spends 6+ hours a day writing vomit-inducing soft-rock songs of the Billy Joel sort, uses a "pretty" but cheesy grand piano patch even on metal stuff, and is remarkably disorganized when we rehearse. I am 180 degrees from that. Most of what I write is sparse, groove-oriented, but harmonically interesting metal-ish stuff in the vein of Tool, Primus, and King Crimson. I try to adapt my tone to fit the song, which includes using a pick if necessary (something the keyboardist hates, since I suspect he's one of those "I like to feel but not hear bass" guys). I expect charts to be made up when I come to rehearsal, since we can only get three hours of rehearsal time per week. (I try to write out charts as best I can, but the keyboardist doesn't like my songs.) I like the guitarist and drummer a whole lot--they're incredible musicians--but as talented and knowledgable as the keyboardist is (we're the only ones who know any theory, really), he's just a pain in the ass to work with. Problem is, the guitarist and keyboardist are roommates and very close friends, and alienating one will surely piss off the other. I'd like to continue working with the drummer and maybe the guitarist. I've never quit a band before; how should I go about this?