Four groups join together for the Peter Gabriel chart-topper "In Your Eyes."
The two youthful groups sing off to the smash hit "Survivor" by Destiny's Child.
The groups and judges make fun of their favorite Sing-Off judge-isms.
The country boys visit their second-favorite locale.
Street Corner Renaissance and The Filharmonic reflect on the results of their Ultimate Sing-Off.
The Filharmonic, VoicePlay and acoUstiKats get earnest about the results.
Survivor's "Eye of the Tiger" takes center stage for one of the night's Ultimate Sing-Offs.
The group dreams up roles for each member to complete its boy band image.
The two groups sing off to the iconic song from The Clash in hopes of landing a spot in the finale.
Street Corner Renaissance aims high with CeeLo Green's "Forget You."
Home Free performs " Cruise"
Home Free and The Filharmonic sing off to the Kenny Loggins hit, "I'm Alright" from "Caddyshack."
Pentatonix returns to show America what earned them Season 3's Sing-Off crown.
C&C Music Factory's "Gonna Make You Sweat" is the youngest group's party choice.
It's young versus old as Street Corner Renaissance and The Filharmonic sing-off to Steam's "Na Na Hey Hey Kiss Him Goodbye."
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