GATHERING Is it any surprise that the city responsible for Critical Mass would also have birthed the country's largest 100 percent pedal-powered musical festival? We didn't think so. Since 2007, a group of volunteers have been hosting this multi-location celebration of bikes, music, and sustainable culture and we expect this year's to be bigger than ever, with musical participants like Cello Joe, Manicato, Sean Hayes, and many more. The day starts early at 935 York St. for a Critical Mass-style bike parade (complete with a 2,000-watt pedal-powered PA system, of course) to Golden Gate Park's Marx Meadow, where bands will play on the bike-powered, bike-hauled stage. Another cruise takes revelers to Dolores Park for a series of live shows starting at 3 p.m. The event officially concludes with another set of concerts including the fantastically entertaining Tornado Rider (think cello metal) at 8:45 p.m. But we're pretty sure that after all the riding and playing, the city's bike aficionados aren't going to call it a night so drivers, beware! And bikers, game on!
BICYCLE MUSIC FESTIVAL Sat/20, 8 a.m. Free. 935 York, SF. (415) 572-9625. bicyclemusicfestival.com