Season 3 Episode 15 episode 15

Glee Season 3 Episode 15 "Big Brother" Sneak Peek 2: Full Performance of "Somebody I Used to Know"

Glee Season 3 Episode 15 "Big Brother" Sneak Peek 2: Full Performance of "Somebody I Used to Know"

You can watch Blaine (Darren Criss) and his brother, Cooper (Matt Bomer) duet it out with a full performance of "Somebody I Used to Know", in this second sneak peek for season 3 episode 15, "Big Brother":


Source: FOX