Bach is a good example of music that's both simple and complex. He'll take a few (often just one) fairly simple theme, and weave variations of it into a lush fa

Bach is a good example of music that's both simple and complex. He'll take a few (often just one) fairly simple theme, and weave variations of it into a lush fabric that's coherent and natural (yet always surprising) -- the nearest thing to justice one finds in music.