there, my friends u are wrong
It is impossible, as u say for a computer to pick out a guitar part with chords in the background, other melodies, harmonies going on simultaneously. MARS did carry Finale by Coda. And, my friend who posted previously is right. It does, very well by the way, have that ability. Only on one melody at a time right now tho. using cool edit tho, u can use a notch filter to isolate the range of the melody, and a high/low pass filter. So conceivably (sp?), u might be able to. Finale also makes software called Finale Guitar. It takes incoming sound, converts it to either tab, sheet music, or just midi. Sorry don't want to start an argument, I just thought everyone knew about this software. Finale rocks, I've been using it for years.