Tony Bennett and Lady Gaga's collaborative album is called Cheek To Cheek. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Lady Gaga's new album, ARTPOP, is out now. Inez and Vinoodh/Courtesy of the artist hide caption

itoggle caption Inez and Vinoodh/Courtesy of the artist

Lady Gaga performs in Carlisle, England in May 2011. Dave Hogan/Getty Images hide caption

itoggle caption Dave Hogan/Getty Images