In How a Choir Works, choirmaster Gareth Malone (The Choir: Unsung Town, BBC2) joins forces with the BBC Singers to explore the styles and techniques that create a choir. Why the four sections? What’s polyphony and what links Bach and the Beach Boys? What difference does the venue make? And what is the choral combination that’s guaranteed to touch an emotional chord in all of us? With repertoire ranging from Mahler to Queen, fabulous archive and contributions from leading choral experts, How a Choir Works lifts the lid on the secrets of great choral music.