Mohawk alumni Matt McComick and his a cappella group The Beelzebubs have advanced through the first two rounds of NBC's "The Sing-Off" with some amazing performances! They will be in the third round tonight (8 pm - 10 pm) in an effort to make it to the finals on Monday, Dec. 21.
The winner on Monday's live show will be determined by call-in votes from the audience. Be sure to watch and cast your vote.
If you missed a show or want to see one again they can be seen on NBC's online Video Rewind.