===1973–75: Top 10 album===Zappa then formed and toured with smaller groups that variously included Ian Underwood (reeds, keyboards), Ruth Underwood (vibes, marimba), Sal Marquez (trumpet, vocals), Napoleon Murphy Brock (sax, flute and vocals), Bruce Fowler (trombone), Tom Fowler (bass), Chester Thompson (drums), Ralph Humphrey (drums), George Duke (keyboards, vocals), and Jean-Luc Ponty (violin).
Med njenimi člani so bili britanski bobnar Aynsley Dunbar, jazz klaviaturist George Duke, bivši član The Mothers Ian Underwood, Jeff Simmons (bas, ritem kitara) in trije člani The Turtles: basist Jim Pons, ki je bil pred tem pevec v skupini The Leaves, ter pevca Mark Volman in Howard Kaylan, ki sta zaradi pravnih problemov na odru prevzela ime »The Phlorescent Leech and Eddie« ali krajše »Flo & Eddie«.