The Bridge School Benefit began celebrating its 25th year yesterday with performances by Dave Matthews, Eddie Vedder, Beck, Arcade Fire, Mumford & Sons, and of course organizer Neil Young. Young joined fellow Canadians Arcade Fire for a stellar acoustic version of his "Helpless." Watch and download: [videoembed size="full_width" alignment="center"][/videoembed] Arcade Fire & Neil Young - "Helpless" AF's Régine Chassagne also ...