 The performers were Magda Laszlo, Mario Binci, Scipio Colombo, with conductor Hermann Scherchen.The "professional" American premiere took place on September 29, 1960, at the New York City Center, where the cast included Norman Treigle, Richard Cassilly and Anne McKnight; Leopold Stokowski conducted Christopher West's production.According to the publisher, the first dozen years after the première had over 186 performances of "Il prigioniero" on radio, concert platform, and stage.