Two years in the making, Canadian-born singer/songwriter Avril Lavigne releases her fourth studio album, GOODBYE LULLABY. Lavigne worked with longtime collaborators Deryck Whibley, Evan Taubenfeld and Butch Walker, as well as songwriter/producer Max Martin. Lavigne continues to share her personal experiences through her writing and music, and GOODBYE LULLABY is a further evolution of this, propelled by a more raw and organic sound. Features the hit single "What the Hell".