It was my first time seeing Bon Iver, and I cleared my schedule to catch their set on Outside Lands' Presidio stage on the strength of one immensely compelling statement from a trusted source about the band's recent two-night stand in New York: "I wept.

Outside Lands has proven a unique entry into the festival circuit in many ways, with chilly, misty temperatures not least among them.

With a damp, chilly mist settling onto the shoulders of some 60,000 patrons in San Francisco's Golden Gate Park, the ebullient grin on bassist Colin Greenwood's face summed it up: This Radiohead performance would be difficult to forget.

Outside Lands, the ambitious new festival beginning its inaugural installation in San Francisco's Golden Gate Park, kicked off last night with big-time performances from Radiohead, Beck, the Black Keys, Cold War Kids, and more. Go backstage with SPIN.com's Peter Gaston in the video below and hear about how SPIN.com will be covering the festival all weekend long.