I spotted this on Richard Holden's thoroughly readable blog (link now broken). Howard Goodall is an award-winning composer and the writer of the 2point4 Children theme tune.
Here, he talks about how music boils down to some pretty useful basics.
If you understand music theory, it's a bit like teaching your grand piano player to suck an egg shaker.
I'm also not sure how this relates to difficult electronic compositions consisting entirely of clicks, wailing cats and exploding vegetables. But I was brought up playing classical piano, so I like this kind of thing.