Megan & Liz "This is Me" by Demi Lovato:
Katherine J Ross "Back to the Garden" (original song):
Cimorelli "Singing My Song" (original song):
Cactus Cuties "Amazing Grace" by Terri Caldwell:
Tiffany Alvord "Stop and Stare" by OneRepublic:
Hunter Pecunia "Disturbia" by Rihanna: