Season 3 Episode 15 episode 15

Listen to Full Songs from Glee Season 3 Episode 15 "Big Brother"!

Listen to Full Songs from Glee Season 3 Episode 15 "Big Brother"!

You can take a sneak listen to full versions of the songs featured in tonight's new Glee, "Big Brother" - including a duet between Blaine and his bro (Darren Criss and Matt Bomer):