Actually, I don't give a shit about the fate of the major labels and will laugh as they continue their slide into epic fail, but this is a cool idea, and if I had the contacts or technical skill I'd try it myself. Offer, for (paid) download, the individual tracks ("stems", do they call them now?) of songs, i.e., the bass track, guitar track, drum track, a
capella vocal track, etc. for people...