Bob has two session guests this week, Dave Matthews and Bex Marshall. Recorded just before his appearance in London's Hyde Park, rock superstar Dave Matthews talks about his label and his latest album and plays three acoustic tracks for Bob. The After Midnight acoustic session guest Bex Marshall has been likened to Stevie Ray Vaughan and Janis Joplin. The Who's Roger Daltrey is also a fan. At the age of 11, classical guitar playing was her first passion followed by flamenco, country, rock and onto blues and roots.