Twiturm.com

Twiturm.com is a site that allows musicians and artists to upload and share their music on twitter.com with their followers. Twiturm provides a link to a page that presents the users music as well as creates a profile for each user with a catalog of their uploaded works.

"Twiturm is amazingly simple to use.  You don’t even have to sign up for an account at Twiturm as you use your Twitter account.  Just log in with your Twitter username and password, and Twiturm  allows you to upload and post to Twitter straight from the Twiturm interface – as you can see with the form to the right."

- http://www.musicplayer.me/2009/07/10/twiturm-twitter-tweeting-and-tunes/