You want Markov chain generated content that sounds like it was written by a person? Sure, here's a suite for string quartet written via a constrained Markov Chain—in 1956. It's really not bad at all, even the more 'adventurous' pieces. I'd rather listen to this than Schoenberg. [Scroll down a bit to hear the experiments.]
Illiac Suite – Musica Informatica
The Illiac Suite is the first musical composition for traditional instruments that was made through computer-assisted composition by Lejaren Hiller and Leonard Isaacson.
musicainformatica.org