The OpenMusicGallery is an open music project released under the OMG License.
OMG is a library of open music (http://openmusicgallery.net) that includes an integrated HTML Digital Audio Workstation (http://omgbam.com) and touchscreen modular instruments (http://omgbananas.com).
Read about how crazy of an idea it is at http://openmusicgallery.com.