The six groups in this episode include a cappella group The Bristol Suspensions, pop choir from Liverpool Over the Water, show choir Perfect 6th, all-female country group The Savannahs, Portsmouth UniversityGospel Choir and musical theatre performers Vocal-i-sing. They must impress the panel of musical judges - Gareth Malone, Kelis and guest judge Seal.

It is the live final of Pitch Battle. Host Mel Giedroyc is joined by a trio of musical judges - Gareth Malone, Kelis and guest judge Deke Sharon. Between them they will whittle the six final choirs down to thetop two through a series of head-to-head, sing-or-be-sung-off choral challenges, leaving the viewers to pick the ultimate winner.