The Sing-Off: Season 4, Episode 1- The Sing-Off Is Back

Some Nights / We Are Young / Carry On

The Sing-Off Contestants

Bottom of the River

Vocal Rush

Cruise

Home Free

I Knew You Were Trouble

The Princeton Footnotes

Pon De Replay

CALLE SOL

What Makes You Beautiful

Street Corner Renaissance

Tell Me Something Good

Ten

Burn

Element

Feel This Moment

VoicePlay

Treasure

The Filharmonic

Blurred Lines

Acoustikats