Side Note: Darrn Criss Rules!
It only took the first few notes of the Dalton Academy Warblers' a cappella crooning to capture the attention of "Glee" fans everywhere when they sang Katy Perry's "Teenage Dream" in November, with the single taking the No. 1 spot on the Billboard chart. The latest "Glee" compilation, "Glee: The Music Presents the Warblers" comes out in stores Tuesday.
Read the Story of the "Real Warblers" here