Johnny Mercer Sings! (The Songs He DIDN'T Write) features Leslie Anderson, Ricky Ritzel, Joe Regan, and "The Pied Pipers. " "Leslie Anderson and Ricky Ritzel have built a substantial cabaret reputation on the songs of Johnny Mercer. Kudos have showered on the pair for their previous Mercer-themed shows: Mercer A to Z, The Johnny Mercer Birthday Show, and Mercer at the Movies." -- Peter Leavy, Cabaret Scenes.