Just a thought tho. I've heard you can plug in a mic to an mpc, surely don't know sounding and stuff otherwise, and had an idea with my mpc500 to do that if you record a beat to a full wav track; save it and re-assign to a pad and make new project and record as you do on Record/Record: Main (MPC500). Then record test; volume etc, and if all set just rhyme over the beat. Just my imagination. has anyone done that.