I just received an invite to Spotify - Spotify is a music programme which allows you to stream and listen to music through your computer. The company that developed it has made contracts with loads of record labels which means you can listen to a huge number of songs with a high sound quality. Hooray! I'm already a fan of Blip.fm so I'm looking forward to trying Spotify out.
If you have Spotify already, let me know if this link works here - if it does, you should be listening to 'Queen Bitch' by David Bowie!