In a nifty collection of interviews (Talking Music), William Duckworth asks composer Lou Harrison why he brought together divergent influences to his own work. Harrison says it wasn't conscious, but the reason he does give is forthright and true at times for most creative people.
DUCKWORTH: How did they get in there?
HARRISON: Well, because I loved them. "Me, too," that's the idea. If I like something I want that too. It's greed--that's the basis of it."