Does anyone have any suggestions for coming up with extended chord progressions, with a bit of jazz flavor? I'm ultimately a rock guy but I've a great fondness for people like Elvis Costello and Randy Newman and Laura Nyro who run through these long progressions with jazzy inflections and side twitches, or old broadway stuff like West Side Story. Basically, I'm sick to death of four chord cycles. I know one way of disrupting those sort of easy patterns - the Pixies thing, cut off beats and measures or drag an extra measure out of the progression - but I want to screw with things in a more complicated way, and these huge progressions that carry an entire verse really appeal to me. Doesn't help, of course, that a lot of 'em are piano based, and the chords are unusual and inverted. I'm just a lowly rhythm player, but that doesn't mean I'm not allowed to get complex, neh? So yeah, any suggestions you guys might have would be awesome. Thanks for your help.