Billy Corgan (Smashing Pumpkins, Zwan) apparently contributed guitar to a track on the upcoming album from Swedish Christian nu-metallers Blindside. "[He] heard a song, flipped out, and asked if he could play guitar on the record," manager Tim Cook told Billboard. And so guitarist Simon Grenehed promptly got on a plane, flew to Chicago, and went into Billy's studio to lay down tracks for the song "Hooray, It's L.A". The band's new album "About A Burning Fire" comes out on Elektra early next year.