Conductor Antonio Pappano led the young players of the National Youth Orchestra of the United States in a spectacular performance of Richard Strauss’s Alpine Symphony on August 1st in Ozawa Hall at Tanglewood. The Alpine Symphony is well-known to be one of the most difficult orchestral pieces in the symphonic repertoire. To watch the intensity of these instrumentalists was almost as wonderful as hearing them. The hall vibrated with exuberance as well as tenderness. Conductor Antonio Pappano has every right to be proud of this superb young group of players.