Slate is running a piece today entitled “Art Mobs” that takes a look at how collaboration between artists has changed as things move online. It covers graphical, film, and text pieces, but the best example is a song.

We’ve profiled MacJams before, the site built around sharing tracks for Apple’s Garageband users. They’ve got Creative Commons licenses built in and this slate article highlights the final track “Please Eat.” It is the fourth version of an earlier cut, and in the end four different musicians contributed 36 separate tracks to the final song.

I did some digging around and here is the original track, which is licensed under an Attribution license. If you’d like to further mash the track, the final track mentioned is under an Attribution-Noncommercial license.