Deke Sharon is known as "the father of contemporary a cappella". Photo: Wikimedia Commons
There's been a cappella singing since the dawn of time - vocals without instrumental accompaniment. Choirs, old gospel, folk songs and barbershop quartets refined the sound to the respectable glee clubs of American universities.
But we've come a long way from there recently - remember the hit Pitch Perfect movies? Simon Morris talks to the "father of contemporary a cappella" - and vocal arranger of Pitch Perfect - Deke Sharon.
