Over several years of regional touring with Powerhouse, Kay performed with or opened for Bonnie Raitt, Muddy Waters, James Cotton, Big Walter Horton, J. B. Hutto, John Lee Hooker, Frank Zappa, Captain Beefheart, Blood Sweat & Tears, NRBQ, Bob Margolin, Janis Ian, The Nighthawks and many others.
Kay performed with or opened for a wide range of artists over several years, including Bonnie Raitt, Muddy Waters, James Cotton, Big Walter Horton, J. B. Hutto, John Lee Hooker, Frank Zappa, Captain Beefheart, Blood Sweat & Tears, NRBQ, Bob Margolin, Janis Ian, The Nighthawks and many others.