The Sing-Off
A Sing-Off Christmas (3x12)
Seizoensfinale
Uitzenddatum: Dec 05, 2011
Holiday and inspirational songs performed by the winning groups from all three seasons, a compilation of lead singers from season three, a collegiate ensemble and special guests.
- in première gegaan: Dec 2009
- Afleveringen: 29
- Volgers: 162
- Afgelopen
- NBC
- Maandag op 20
