Listen to Sammy Hagar and the Circle Perform ‘Poundcake': Exclusive PremiereListen to Sammy Hagar and the Circle Perform ‘Poundcake': Exclusive PremiereOn May 19, Sammy Hagar will release At Your Service, a live album culled from dates of his 2014 tour with his new band the Circle.Dave LiftonDave Lifton