The dilemma is that we have a local open jam nite once a week. Bunch of great musicians show up, we sign in and are paired up. Problem is that "vocalists" show and they are all rappers. So you'll end up with a guitarist/bassist/drummer up there wanting to "jam" and are locked down to one thing because there's someone at the mic rapping blindly to the kick and snare. There's always throwing in some double-time or half-time. I haven't tried that yet. I suppose there's always 5/4 or something... Just looking for some ideas. Thanks!