The Sing-Off
A Sing-Off Christmas (3x12)
Final da temporada
Data de estreia: Dez 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.
- Estreia: Dez 2009
- Episódios: 29
- Seguidores: 162
- Acabou
- NBC
- Segunda-Feira às 20
