(SOUNDBITE OF SONG, "CALIFORNIA DREAMIN'") THE MAMAS & THE PAPAS: (Singing) California dreamin'. SIMON: Just a few years later, the flute reappeared on "California Dreamin'" by the Mamas & the Papas.

Yesterday, he dropped off a new track called "The Flute Song." Russ' new album is titled Zoo, and it's all set to be released on Sept. 7. Produced by Scott Storch, "The Flute Song" is the first ...