Date: Saturday, December 15
Time: TBA
Location: TBA
Perfect For: Being part of a huge holiday work of art

The 20-year-old tradition has become an international phenomenon, and has drawn crowds of 1,500 in New York City. Participants bring boomboxes, iPods, and laptops to play Kline's 45 minute composition, letting music ring out as they walk through city streets. If you're looking to be part of a work of art this holiday season, this is how.