WWW.NBC.com...The Princeton University group talks up the stiff Sing-Off competition.
The Sing-Off Returns Monday, December 9th at 9/8c!
http://www.nbc.com/sing-off/
Get more of The Sing-Off:
The Sing-Off Twitter: https://twitter.com/thesingoff
The Sing-Off Facebook: http://www.facebook.com/TheSingOff

Tags: education university princeton prep schools college lodging entertainment shopping dining yourtowntube business