not a whole lot, but on the hip-hop side of things, I have some album advances with tracks that didn't make the final release, and a couple of albums that got s

not a whole lot, but on the hip-hop side of things, I have some album advances with tracks that didn't make the final release, and a couple of albums that got shelved and never actually came out. Others would just be specific mashups / blends that DJ's might just do live on air; a lot of them record their sessions and trade tracks with each other, but they're not going to put it up on p2p.