thanks for all of the replies & sorry for my late one! academic mayhem caught me unawares but after I clear out all (or, er, most of) my obligations, I'll be racing back here-- professional projects were stacking up for a bit but since I'm in music for love, not money, I'd much rather get back to projects simply for fun!
Arcana, I'll definitely check out One Hour Compo sometime-- sounds interesting.
Rozovian, thanks for the suggestions-- I am a songwriter, but I'm looking to add vocals to instrumentals more than do arrangements of my own on my own, for now. and yes, I have my own recording setup-- it'd be hard to have completed songs without it!
Nicole, thanks for the kind words-- I'm absolutely up for originals, not just remixes, so feel free to contact me at any time.