This is the golden age of music. I'm not referring to the quality of the music produced, although there's a tremendous amount of wonderful music being made right now. Rather, I mean the ability to listen to whatever you want, whenever you want it. Pick any tune or performance and google it and you'll likely find it available to be streamed or downloaded, usually legally. The streaming music services have improved over the last year so much that they represent an alternative to having your own collection. The popular services have millions of tunes of all type.
I subscribe to
Rhapsody, probably the most complete library, but there are a number of other streaming services with similar libraries:
MOG All-Access and
Rdio to name just two others.
The three mentioned above require a monthly payment, although they all have free trials.
Grooveshark is a free service where you can stream music uploaded by other people. It has music that doesn't show up on the other services,
Zappa for example.
Of course, there's still lots of net radio, despite SoundExchange's
attempt to kill it. The best web radio, of course, is
WFMU, the greatest radio station in the universe.