Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
1. Orchestral Concert – ORF-Symphonieorchester, Bruno Maderna by Messiaen, Stravinsky, Boulez, Lutosławski, Minn (1973/1973), Surmast Direttur Bruno Maderna, Stiftung Mozarteum, Salzburg, Austria