Tom Lehrer remembered, plus Nick Drake's unreleased songs

Richard Stilgoe pays tribute to the great American humorist and songwriter Tom Lehrer, who has died at the age of 97. Samira discusses newly released and previously unheard songs by Nick Drake. Petra Volpe talks about her acclaimed film Late Shift, which tells the story of nurse's night shift in a Swiss hospital. Presenter Samira Ahmed Producer: Harry Graham