What would Planet Earth be without the incredible sounds – both real and designed – that help bring the natural world to life? From vultures feasting on bones to the wonderful voice of Sir David. Mike Gunton talks to sound recordist Chris Watson about the techniques used to capture sounds on location, while dubbing mixer Graham Wild shares some of the more surprising ingredients that go into creating the sounds of an elephant giving birth. Composers Jacob Shea and Sara Barone describe how they came up with the theme of Planet Earth III, while Sir David Attenborough remembers his own time recording sounds for his earliest programmes.