Big Mood, how does comedy work? Bach St John Passion

Camilla Whitehill on her new Channel 4 sitcom Big Mood, starring Nicola Coughlan and Lydia West, which explores the lives of Millennials. Gareth Malone and Hannah French celebrate Bach's St John Passion, which was first performed in Leipzig 300 years ago this Easter. Joel Morris, author of Be Funny or Die, discusses how comedy works and what makes us laugh with Father Ted director Lissa Evans.Presenter: Samira Ahmed Producer: Olivia Skinner