New Directions' rivals, the Dalton Academy Warblers, debuted with a bang in the second season of Glee; their version of Katy Perry's ?Teenage Dream? became the fastest-selling single in the history of the show! This beloved male a capella group starring Darren Criss and Chris Colfer now has its own release, Glee: The Music Presents the Warblers. This easy piano songbook features arrangements of over a dozen hits as performed by The Warblers!