The Kids Are Alright is a fantastic documentation of the original The Who line-up, starting at the mid '60ies until drummer Keith Moon's death in 1978. The movie is based upon private video collections from director Jeff Stein which were edited together to make a whole. Of course, Woodstock material is also included: "Sparks", "Pinball Wizard" and "See Me, Feel Me". The Deluxe Edition doesn't add new festival material. According to Wikipedia the backing vocals on the Woodstock tracks were overdubbed.