. "1958-04-01T20:30:00"^^ . . . . . "symphony orchestra performance" . "The Philadelphia Orchestra" . . . "NEW YORK PREMIERE of Miklos Rosza'a CONCERTO FOR STRINGS, OP. 17\r\nNEW YORK PREMIERE of Sergei Prokofiev's CONCERTO FOR THE LEFT HAND, OP. 53\r\nNEW YORK PREMIERE of George Rochberg's SYMPHONY NO. 1" . . .