[DanBC]

I'd love to hear a Markov chain. I don't think it'd be pleasant. But it'd be fun.

[aamar]

Quite a few of these online:

MC trained on classical composers: http://www.youtube.com/watch?v=qOZ2Q-Ls48U

Iannis Xenakis was a major 20th century composer who incorporated MCs into some works: http://www.youtube.com/watch?v=DTzOWKaDrVI

Haven't seen a serious effort with pop/rock though. Lyrics might be the sticking point.