Darren Criss burst into the hearts of Glee fans everywhere when he joined the cast as Kurt’s new BFF, charming rival glee club star Blaine, but it was his wicked performance of Katy Perry’s “Teenage Dream” that really sealed the deal. Not just a pretty voice, Criss recently showed off his skill as a pianist and songwriter when stopped by MTV show The Seven to perform acoustic versions of “Teenage Dream” and his own song “Not Alone” for the (very, very) lucky studio audience! Click below for a ringside seat at this intimate performance.