The Sing-Off
A Sing-Off Christmas (3x12)
Épisode final de la saison
Date de diffusion: Déc 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.
- Première: Déc 2009
- Épisodes: 29
- Abonnés: 162
