Spot on, cheers Loopdon, I could really do with a good read of some tutorials, that'd be great. I'm sure the answer's in the question here, but try as hard as I might, I can't get the sound I'm after. I came very close using sine waves instead of square, but no cigar unfortunately. The other option is buy a machine drum, which I'm seriously considering, if anybody's got any feedback on them things I'd love to here it..