HEART's Ann Wilson made a special guest appearance during the closing concert of GOV'T MULE's three-night stand Sunday night (May 2) at Westville Music Bowl in New Haven, Connecticut. Wilson joined GOV'T MULE for a cover of LED ZEPPELIN's "Immigrant Song", a take on Memphis Slim's "Mother Earth" incorporating Willie Dixon's "You Shook Me", versions of ZEPPELIN's "Black Dog" and "No Quarter", a cover of TOM PETTY & THE HEARTBREAKERS' "Luna" and the HEART song "Magic Man". Check out fan-filmed video footage below.