I have found that for older music, 70's and earlier, Rhapsody has a better selection that anybody.
I have tried subscriptions to Yahoo Music and Rhapsody, checked for music at iTunes, Amazon and WalMart,
and still find that most times it is available at Rhapsody and many times only at Rhapsody. They are signing exclusive contracts
with some of the recording companies, things should get even more interesting in the future.