Summary: Libby Purves is joined by Professor Sean Street who is an historian, writer, presenter and poet and his new book is 'The Poetry of Radio - The Colour of Sound';Jazz saxophonist and composer Barbara Thompson and her husband, the drummer Jon Hiseman who feature in a BBC Four documentary 'Playing Against Time'which shows how she copes with Parkinson's disease; Sir Anthony Sher who is starring in Nicholas Wright's new play 'Travelling Light' at the National Theatre and biographer Jonathan Croall who had been investigating his father's life as actor in the 'silent' films and beyond.
