Music Matters - Petroc Trelawny

Petroc Trelawny talks to director Jonathan Miller as his eagerly-awaited production of Puccini's La Boheme opens at English National Opera. Voice coach Christina Shewell talks about her new book, Voice Work, in which she offers solutions to help people with problems in their spoken and singing voices. Petroc is also joined by experts to discuss Darwin and the evolution of music.