Music & Bits, being held Oct 21st in Amsterdam, is a Music Hack Day pre-conference to the Amsterdam Dance Event.
At the Music Hack Day track the main goal is for participants to rapidly prototype and build new projects, working through the night to complete and present them in the late afternoon. They have only this day to conceptualize, build, & present their projects.
The event will include presentations by SoundCloud, Muxtape, RjDj, Last.fm and others.
Details are available at the Music And Bits site.