En direct, Vidéo: Rechercher des critiques de musique classique, opéra et ballet | Tuning Up

A Total Immersion day exploring the works of Edgar Varèse at the Barbican. 

Despite knowing what was going to happen, it was a still surprising when, amid the chatter and bustle of the audience before the concert (there was a distinct lack of communal coughing before it started), the National Youth Orchestra of Great Britain began Tuning Up.