I think Finale's new "Guitar" program is supposed to let you input sound from any source that can be plugged directly in or miked and generate either a MIDI or sheet music.

I haven't tried it myself, though. I imagine, though, that the result will depend on how true your pitch is and how simple your timing is. A really 'lyrical' arrangement, with notes held for odd lengths like 1/64 or 7/8 notes, or a voice that doesn't deliver a clear single pitch would probably confuse the program. Joe, I imagine that laryngitis might make it sound like your were playing a violin and a washboard at the same time! ;-D

Genie