Watch: Darren Criss Sings Katy Perry's "Part of Me" at Trevor Live! 2012 (VIDEO) Tweet December 5, 2012 at 08:00AM EST by Beth Douglass Related: Glee, Music , Darren Criss Credit: The Insider Darren Criss (Blaine) stole our hearts with his swoonworthy version of Katy Perry's "Teenage Dream" on Glee last season. Now, he's taking on another Katy Perry hit. Darren performed the pop star's new single, "Piece of Me" during the TREVOR LIVE event in Hollywood on December 2. What do you think of his unique, guitar-focused take on the song? Source: The Insider Can’t get enough Gleetastic goodness? Like us on Facebook or follow us on Twitter!