Actor, comedian and musician Christopher Guest joins Chris Difford in this episode. Best known for playing the lead guitarist Nigel Tufnel in This Is Spinal Tap, Christopher shines a light on the creation of the iconic and much loved film, and the surreal but satisfying life the spoof band has enjoyed since the release nearly 40 years ago. He also discusses his earlier career writing satirical songs and his teenage years discovering  and devouring music.