Alex Ross' bestseller The Rest Is Noise is a great read for music lovers of any genre who are interested in finding out what music is about and what "contemporary music" also means beyond "now that's what I can music!". He's blog,
therestisnoise.com is one of the very first classical music blogs that inspired numerous readers and other bloggers. It seems that nowadays he mainly updates his New Yorker blog
Unquiet Thoughts.
He posted a twentieth-century playlist
here, originally for the iTunes store. I made a Spotify playlist after that, most of the tracks are available in Spotify, for the few ones that the very recording version he chose was not available, I substituted with the best recordings I can find.
Here's the Spotify playlist: Alex Ross' 20th Century Limited Kudos to Mr. Ross, and enjoy the music.