Neil & Pegi Young’s Bridge School Benefit kicked off yesterday at Mountain View, CA’s scenic Shoreline Amphitheater. Included in the opening night performances were Arcade Fire, Elvis Costello, Heart, Jack Johnson, Jenny Lewis, My Morning Jacket, fun., Queens of the Stone Age, Neil Young, Diana Krall and Crosby, Stills, Nash & Young. The all-acoustic event featured a variety of collaborations and surprises during the first night.

Along with debuting “Awful Sound (Oh Eurydice),” a new cut from their forthcoming release, Reflektor, Arcade Fire also invited Neil Young on stage for a new song “I Dreamed a Neil Young Song.” Arcade Fire frontman Win Butler remarked that he had a dream where the band wrote a Neil Young song, so therefore invited the host to come sing the song with the band. Diana Krall and Elvis Costello collaborated for a couple of songs, performing Costello’s “Sulphur to Sugarcane” as well as Bob Dylan’s “Wallflower” together. Speaking of Costello, the guitarist, playing a rare cover of The Beatles’ “You’ve Got to Hide Your Love Away,” also invited Graham Nash on stage for The Hollies “King Midas in Reverse.”

Jack Johnson took the stage for an eight-song set that included a snippet of “Just What I Needed” (The Cars) during his original “Sitting, Waiting, Wishing.” The singer/songwriter also brought out Neil Young to close his set with Neil’s original “Out on the Weekend.” My Morning Jacket also brought Neil out for a cover of “Harvest Moon.” MMJ’s set included a Woody Guthrie cover as well, with the band mixing in Guthrie’s “Pastures of Plenty” along with “Circuital,” “Victory Dance” and “I’m Amazed.”

Tonight’s show features Crosby, Stills, Nash & Young, Diana Krall, Elvis Costello, Heart, Jenny Lewis, My Morning Jacket, Queens of the Stone Age, Tom Waits and fun. Fans wishing to watch the show tonight can do so via the Bridge School webcast.