 Initially appearing as the lead vocalist of "Glee"s Dalton Academy Warblers, Criss' first number, a cover version of "Teenage Dream", became the fastest-selling "Glee" single, reached number eight on the "Billboard" Hot 100, and was certified gold in the US.The Warblers have sold over 1.3 million tracks, and the soundtrack album, "" (2011), peaked at number two on the US "Billboard" 200.He was nominated for an Emmy Award in 2015 for writing the song "This Time" for the "Glee" finale.