Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla Opera, zuwa wani littafi na Barrie Stavis, ya haɗa da wasu waƙoƙin Hill.
Tabbas, wani nau'i mai rikitarwa na jumla shine "The opera, zuwa libretto na Barrie Stavis, an fara shi ne a gidan wasan kwaikwayo na Jamus, Berlin a ranar 29 ga Satumba, 1970, kuma a 1979 BBC ta watsa shi. "