Amy from the eliminated group Delilah sang "Paradise by the Dashboard Light" with the Dartmouth Aires.
Some of the groups eliminated in previous episodes returned and sang portions of songs they had performed.
"The Way You Make Me Feel" by Michael Jackson
"Gym Heroes" by Stereo Hearts (feat. Adam Levine)
[joined by Sara Bareilles] "Gonna Get Over You" by Sara Bareilles
"Coming Home" by Diddy-Dirty Money (feat. Skylar Grey)
"Without You" by David Guetta (feat. Usher)
[joined by Nick Lachey] "Give Me Just One Night (Una Noche)" by 98 Degrees
"Eye of the Tiger" by Survivor
"Paradise by the Dashboard Light" by Meat Loaf
[joined by Ben Folds] "Not the Same" by Ben Folds
[females from Top 10 groups] "(You Make Me Feel Like) A Natural Woman" by Aretha Franklin
[males from Top 10 groups] "Born to Run" by Bruce Springsteen
[Afro-Blue, joined by Smokey Robinson] "You've Really Got a Hold On Me" by Smokey Robinson