Pilot
Episode: 1x01 | Airdate: Dec 14, 2009
Season 1
Big Hits & Guilty Pleasures
Episode: 1x02 | Airdate: Dec 15, 2009
Superstar Medley, Judges' Challenge & Songs Of Hope
Episode: 1x03 | Airdate: Dec 16, 2009
The Finale
Episode: 1x04 | Airdate: Dec 21, 2009
Season 2
Episode 1
Episode: 2x01 | Airdate: Dec 6, 2010
Episode 2
Episode: 2x02 | Airdate: Dec 8, 2010
Episode 3
Episode: 2x03 | Airdate: Dec 13, 2010
Episode 4
Episode: 2x04 | Airdate: Dec 15, 2010
Episode 5
Episode: 2x05 | Airdate: Dec 20, 2010
Season 3
Season Premiere Part I
Episode: 3x01 | Airdate: Sep 19, 2011
Season Premiere Part II
Episode: 3x02 | Airdate: Sep 26, 2011
Radio Hits & 60's Classics: Part I
Episode: 3x03 | Airdate: Oct 3, 2011
Radio Hits & 60's Classics: Part II
Episode: 3x04 | Airdate: Oct 10, 2011
Top 10 Groups: Guilty Pleasure Music
Episode: 3x05 | Airdate: Oct 17, 2011
Top 8 Groups: Hip-hop Hits
Episode: 3x06 | Airdate: Oct 24, 2011
Top 7 Groups: Superstar Medleys
Episode: 3x07 | Airdate: Oct 31, 2011
Top 6 Groups: Rocking out & Goin' Country
Episode: 3x08 | Airdate: Nov 7, 2011
Top 5 Groups: The Rhythm & Blues Revue
Episode: 3x09 | Airdate: Nov 14, 2011
America Votes: Group Mastermixes
Episode: 3x10 | Airdate: Nov 21, 2011
Live Finale: Top 3 Finalists
Episode: 3x11 | Airdate: Nov 28, 2011
A Sing-Off Christmas (LIVE)
Episode: 3x12 | Airdate: Dec 5, 2011
Season 4
The Sing Off Is Back!
Episode: 4x01 | Airdate: Dec 9, 2013
Party Anthems
Episode: 4x02 | Airdate: Dec 11, 2013
# 1 Hits
Episode: 4x03 | Airdate: Dec 12, 2013
My Generation
Episode: 4x04 | Airdate: Dec 16, 2013
Movie Night
Episode: 4x05 | Airdate: Dec 18, 2013
Judge's Choice
Episode: 4x06 | Airdate: Dec 19, 2013
4th Season Finale
Episode: 4x07 | Airdate: Dec 23, 2013
Specials
Holiday Edition
Episode: S04 Special | Airdate: Dec 17, 2014