JTA — A raucous crowd of soccer fans filled the narrow strip of grass between the Tel Aviv-Yafo Music Center and the Bloomfield Stadium, home to Tel Aviv’s two premier league teams. Threading their way toward the concert hall was an incongruous procession of young musicians in eveningwear, lugging cases of every shape and size for contrabasses, violins, ouds, cellos and darbukas. Inside, a small audience of friends, siblings, parents and music lovers let out a swell of whoops and claps more in keeping with a sports match than an orchestral performance. The concert was the public culmination of a youth project composed of Jewish and Arab performers run by the Jerusalem Orchestra East & West, known as TJO, the Israeli orchestra led by conductor Tom Cohen that blends Western orchestral music with Middle Eastern, North African and Andalusian traditions.…