Following last year's sell-out success, celebrated conductor Daniel Barenboim returns to the Royal Albert Hall with his young orchestra of Arab and Israeli musicians - the West-Eastern Divan Orchestra. Soloists are showcased in Mozart's Sinfonia Concertante for oboe, clarinet, bassoon and horn. Following the interval the concert ends with Mahler's Symphony No 1 in D major. During the interval, Verity Sharp talks to Barenboim, plus guests Rob Cowan and James Murphy.