Pandora, a online music sevice is fatured at Radio WNYC. After you have provided a song or an artist, pandora will play similiar music. I prefer Last FM, which offers basicly the same sevice, but has a bigger collection of artists, features and a better sound quality to offer. But on the other hand, Pandora is very easy to use.
wnyc.org: "Today, a look at the Music Genome Project, an ambitious scheme to classify thousands of pieces of popular music. Pandora Media introduced an online music service that creates recommended playlists based on the musical traits of users' tastes. Joining us to explain how it works is Tim Westergren, founder and chief strategy officer of Pandora Media."
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