MeFi Music is a place for Metafilter members to share their own music with the rest of the community. It’s a place for artists to show off what they’re working so that others can listen, critique, and enjoy.
It contains a wide variety of music, from original compositions to covers that are vastly superior to the original songs. Some of it is just experimentation, while some of it is fully produced tracks from upcoming albums.
Some of the music is very good; some of it is very bad. There’s no telling what will be uploaded on a given day, but usually there are at least three or four really fantastic songs a month released for free on the site.
They also have a podcast feed, so that you can be sure to not miss a single new song.
In total, it’s great for artists, who can get some exposure and feedback on their tracks, and it’s great for listeners, who get to listen to free music and occasionally discover some awesome new artists.