Robert Plant sat in with his wife and bandmate Patty Griffin at Austin, TX’s Continental Club on Saturday night. As Rolling Stone reports, Griffin introduced Plant as her “driver,” and the Led Zeppelin singer took the stage wearing a chauffeur’s cap.

Plant joined Griffin and her band for “Ohio” and remained onstage for a mix of his solo material, his wife’s originals and Zeppelin classics: “In The Mood,” “Black Country Woman,” “Cold As It Gets,”“What Is And What Should Never Be,” “Tangerine,” “Rich Woman,”“Going To California,” “Angel Dance” and “Black Dog.” He also bantered about the Kennedy Center Honors and their recent European tour. The evening benefited the Health Alliance for Austin Musicians medical assistance program.