Well, I am an (acoustic) drummer/ percussionist who also happens to do a bit of looping/signal processing. I've found that learning to play with loops has actually helped *improved* my time. I can't stress the importance of having good monitoring! If I can't hear the loop well, there's no chance of grooving with it. It can be really frustrating otherwise. In situations where the monitoring is inadequate, I generally use headphones. Another way I've found that works is to use a drum machine as a MIDI master to sync my looper (Jamman) and any others in the group. This has the added bonus of incorporating the *non-human* machine sounds into the brew. This can sometimes be a great combination. I usually record a loops or layers onto the machine beat and then either eliminate parts of the machine beat or mute it entirely. Sometimes I simply use delay and echo effects from an overhead microphone to create polyrhthms/ cacorhythms. But this is wandering ... sorry. I don't currently have any electrodrums so I haven't any advice in that regard. There are probably other drummers on this list with ideas, suggestions, etc. (P.S: I would love to hear from any of you percussive loopists too!) Hello... any other drummonds out there??