The BEST episodes of The Sing-Off

#1 - Season Premiere: Part 2

Season 3 - Episode 2 - Aired 9/26/2011

Eight more groups perform together and separately. The groups include Messiah's Men, North Shore, Pentatonix, Sonos, Soul'd Out, The Collective, University of Delaware Deltones, Vocal Point

#2 - Radio Hits & 60's Classics: Part I

Season 3 - Episode 3 - Aired 10/3/2011

Theme: Radio Hits (first round), 60's Classics (second round) Group performance: "Somewhere Only We Know" by Keane

#3 - Season Premiere: Part 1

Season 3 - Episode 1 - Aired 9/19/2011

Eight of the 16 competing acapella groups perform as the competition kicks off. Sara Bareilles joins Ben Folds and Shawn Stockman on the judging panel.

#4 - #1 Hits

Season 4 - Episode 3 - Aired 12/12/2013

Eight groups perform their favorite hit.

#5 - Movie Night

Season 4 - Episode 5 - Aired 12/18/2013

The groups perform songs from movies.

#6 - Episode 1

Season 2 - Episode 1 - Aired 12/6/2010

#7 - My Generation

Season 4 - Episode 4 - Aired 12/16/2013

The groups perform songs they hope will please all generations.

#8 - Radio Hits & 60's Classics: Part 2

Season 3 - Episode 4 - Aired 10/10/2011

Theme: Radio Hits (first round), 60's Classics (second round) Group performance: "Rhythm of Love" by Plain White T's

#9 - Episode 2

Season 2 - Episode 2 - Aired 12/8/2010

#10 - Party Anthems

Season 4 - Episode 2 - Aired 12/11/2013

The nine remaining groups perform party anthems.

#11 - Big Hits & Guilty Pleasures

Season 1 - Episode 2 - Aired 12/15/2009

Two groups leave as the competition heats up.

#12 - The Sing Off Is Back!

Season 4 - Episode 1 - Aired 12/9/2013

The groups try to make a good first impression on the judges.

#13 - Superstar Medley, Judges' Challenge & Songs Of Hope

Season 1 - Episode 3 - Aired 12/16/2009

#14 - Finale

Season 4 - Episode 7 - Aired 12/23/2013

The three remaining groups compete; one group is declared the winner.

#15 - Judges' Choice

Season 4 - Episode 6 - Aired 12/19/2013

The groups perform songs chose by the judges.

#16 - Pilot

Season 1 - Episode 1 - Aired 12/14/2009

Eight a cappella groups from across America compete to win a recording contract; host Nick Lachey.

#17 - Live Finale: Top 3 Finalists

Season 3 - Episode 11 - Aired 11/28/2011

The final three groups perform for the last time before finding out who America voted as the country’s best a capella group.

#18 - Top 10 Groups: Guilty Pleasure Music

Season 3 - Episode 5 - Aired 10/17/2011

Theme: Guilty pleasures Group performance: "All Night Long (All Night)" by Lionel Richie*

#19 - Top 6 Groups: Rocking Out & Goin' Country

Season 3 - Episode 8 - Aired 11/7/2011

Theme: Rock classics (first round), Country hits (second round) Group performance: "Wake Up" by Arcade Fire

#20 - One Night Only: A Special Holiday Event

Season 5 - Episode 1 - Aired 12/17/2014

A cappella groups Timothy's Gift, Melodres, the Exchange, Traces, San Fran 6 and A. Squared compete for a first-place prize of $50,000. Jewel and Shawn Stockman return as judges, and are joined by Fall Out Boy's Patrick Stump.

#21 - Top 5 Groups: The Rhythm & Blues Revue

Season 3 - Episode 9 - Aired 11/14/2011

The top five groups open the show with a medley of "I Feel Good" by James Brown, "ABC" by The Jackson 5 and "Crazy in Love" by Beyonce. Later they each perform their favorite R&B hits in an attempt to woo the judges for their votes. The group that remains standing at the end of the season receives the prize of $200,000 cash and a Sony Music recording contract. Nick Lachey hosts and Sara Bareilles, Ben Folds and Shawn Stockman serve as judges.

#22 - The Finale

Season 1 - Episode 4 - Aired 12/21/2009

Finale

#23 - Episode 5

Season 2 - Episode 5 - Aired 12/20/2010

#24 - Top 8 Groups: Hip-Hop Hits

Season 3 - Episode 6 - Aired 10/24/2011

Group performance: "Nothin' on You" by B.o.B. featuring Bruno Mars

#25 - Episode 3

Season 2 - Episode 3 - Aired 12/13/2010