While at Super Bear studios, Waters agreed to Ezrin's suggestion that several tracks, including "Nobody Home", "The Trial" and "Comfortably Numb", should have an orchestral accompaniment. Michael Kamen, who had previously worked with David Bowie, was booked to oversee these arrangements, which were performed by musicians from the New York Philharmonic and New York Symphony Orchestras, and a choir from the New York City Opera. Their sessions were recorded at CBS Studios in New York without Pink Floyd present. Kamen eventually met the band once recording was complete.