I perform solo acoustic with just a guitar. Recently I've really felt like I wanted to add some percussion to some songs, but I'm not sure what the best option would be. I'd like something that would give a "heartbeat" sound - something like a djembe (think "Twa Corbies" by Old Blind Dogs, for example). I don't want a programmable electronic setup because I want to control things with my foot. The idea is just taking shape in my mind, and I wanted to know if anybody else has done something like that. I could rig up something with a small bass drum, perhaps, and a foot pedal, or there may be an electronic device I could use with foot controls?? Has anybody successfully tried something like that?