Season
- Season 5 2014-12-17
- Season 4 2013-12-09
- Season 3 2011-09-19
- Season 2 2010-12-06
- Season 1 2009-12-14
- Season 0 2011-12-05
Episode
- Episode 1: Season Premiere: Part 1
- Episode 2: Season Premiere: Part 2
- Episode 3: Radio Hits & 60's Classics: Part I
- Episode 4: Radio Hits & 60's Classics: Part 2
- Episode 5: Top 10 Groups: Guilty Pleasure Music
- Episode 6: Top 8 Groups: Hip-Hop Hits
- Episode 7: Top 7 Groups: Superstar Medleys
- Episode 8: Top 6 Groups: Rocking Out & Goin' Country
- Episode 9: Top 5 Groups: The Rhythm & Blues Revue
- Episode 10: America Votes: Group Mastermixes
- Episode 11: Live Finale: Top 3 Finalists
The Sing-Off Season 3 Radio Hits & 60's Classics: Part 2
4.667/10 users Featuring the country's best a cappella groups performing popular songs like you've never heard them before. There's no lip-synching, backup bands or safety net. They'll be singing for America's vote, with the winner walking away with the ultimate prize - a Sony Music recording contract and $100,000.
