One I've played around with is, I think, Kokmunicator (303 simulator). Made a mix-track with that and OctaMED SS to practice rhymes over. Made another track in OctaMED, still has a way to go and I'm studying hard again. Uses a mix of 16-bit and 8-bit samples, plus vocals recorded on a PeeCee (8-bit vocals are not real great, I found). I hope to have time at the end of the year to finish the track and rerecord vocals with a Tascam.
I used my 8-bit sampler and a mic to make a track using only my voice (including tracked beatbox) in about 1994.
The old AF CDs used to have a HEAP of sound tools, including soft synths and MIDI connection suites, I can dig one out if you'd like.
jaminJay
"Hip-stick-'em-up-hop!"