“The question of when an artist must engage in politics remains a painful, personal dilemma. It is an issue that preoccupies Daniel Barenboim, Israel’s most celebrated musician and its most vociferous critic. Barenboim has taken his opposition to Israeli policy to the front line, forming a youth orchestra from both sides of the conflict and teaching twice a year at a conservatory in Ramallah whose 800 students, he admits, are imbued with a hatred of Israel. He has been abused by Israeli politicians and pelted with vegetables in a Jerusalem restaurant. But the more he criticises Israel, the deeper his commitment grows.”