I'm listening to Philip Glass - Powaqqatsi, to be specific - and it occurs to me that (in my musically informed opinion) you could put PLENTY of 20th C. music up against Bach and Beethoven and Mozart and others of much ilk, and not be ashamed of the output of our modern composers.
Here's what's good (feel free to mention more in comments, or simply argue with me; I'm cool with that):
- Philip Glass - Koyaanisqatsi, Powaqqatsi
- John Adams - Christian Zeal and Activity, Nixon In China (in particular act 1 scene 1, from "Soldiers of heaven hold the sky" to "News has a kind of mystery")
- George Gershwin - Rhapsody in Blue, Porgy and Bess
- Bela Bartok - all three piano concertos
and of course plenty of goodness from Stravinsky, Richard Strauss, Benjamin Britten, and them-all.
On the down side of the century, we also produced Iannis Xenakis, George Crumb, and "Who Let the Dogs Out". [
edit - it was very unfair of me to lump Crumb in with Xenakis and some pop crap. Specifically, I didn't like "Black Angels". The rest of the man's output might be fantastic, and I shouldn't have lumped him in with the guy who thought stochastic music was a good idea.]
Havergal Brian, I still can't classify. He might be great, but mostly he's just ambitious.