Double mirrorball party light machine
https://www.dropbox.com/s/e1pu6lgy8pedi3n/2013-05-13%2020.13.50.jpg
Backup plan:
visualize soundwaves by creating a laser show based on analog signal
https://www.dropbox.com/s/h54lizhf6wycq8q/2013-05-13%2020.26.23.jpg