Happy Seventieth Birthday, Bob
Some of Bob's friends from the world of music call in to mark his seventieth birthday, plus a session from Graham Nash.
As Bob celebrates his 70th tomorrow we have asked some illustrious friends from the world of music to call in.
These include Robert Plant, Bonnie Raitt, Dave Stewart, Beth Nielsen Chapman, Steve Earle, Brian May, Natalie Merchant, David Gray, Joan Armatrading and Mary Gauthier.
Plus Graham Nash performs a spell binding session featuring new solo tracks and an old favourite.