Twisten is by far my most favorite method of sharing music on Twitter. Created by the people who made Grooveshark, Twisten is just as easy to use and since it uses the same database as Grooveshark, holds quite a large library of music.

Song.ly is another simple and easy-to-use service that certainly contains many of the best features of Twisten. The hompage consists only of a search box that allows you to enter a link to an audio file on the web, or search for a song. Songly then allows you to listen to the song for free, with the option of posting to Twitter.

Twiturm is unlike Twisten or Songly in that it allows users to upload a song(s) and then share it on Twitter. This feature is great if you happen to have a large music collection of songs/artists that for some reason are not able to be found on Twisten or Songly, but otherwise Twiturm is not the easiest way to quickly share songs on Twitter.

TwittyTunes is a Firefox extension that utilizes FoxyTunes (a popular Firefox extension for playing music) to post updates on what you are listening to on Twitter.  Obviously if you do not use FoxyTunes, TwittyTunes would not be very useful, but for those that do use FoxyTunes, TwittyTunes may be just what you are looking for.

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