For many fans of the Proms, the big summer music festival in London, this was the feel-good story of the summer. Nigel Kennedy was on stage with a group of young string players from the Edward Said National Conservatory of Music in Palestine. Everyone could agree, it was a wonderful opportunity for these young musicians. NOT everyone could agree, though, with Nigel Kennedy's characterization of the state of Israel when he spoke from the stage. The music from that performance, and the controversy surrounding it, on Tuesday's Performance Today.