Waihanga i tētahi putanga matatini ake o tēnei rerenga kōrero Ko te opera, he pukapuka nā Barrie Stavis, e whakauru ana i ētahi o ngā waiata a Hill ake.
Ko te tikanga, ko te putanga matatini ake o te rerenga ko "Ko te opera, ki te libretto na Barrie Stavis, i whakarewahia i te Tiamana State Opera, Berlin i te 29 o Mahuru 1970, a i te 1979 i tukuna e te BBC. "