Peter Hollens、Bailey Pelkman - Disco Medley: Take a Chance on Me / Dancing Queen / Gimme! Gimme! Gimme! / Mama Mia / The Winner Takes It All / Waterloo

Disco Medley: Take a Chance on Me / Dancing Queen / Gimme! Gimme! Gimme! / Mama Mia / The Winner Takes It All / Waterloo

Disco Medley: Take a Chance on Me / Dancing Queen / Gimme! Gimme! Gimme! / Mama Mia / The Winner Takes It All / Waterloo