His major works from the 1980s were his two children's operas, Where the Wild Things Are and Higglety Pigglety Pop!, both libretti by Maurice Sendak – and based on Sendak's own eponymous children's books.
Seine beiden Hauptwerke aus den 1980er Jahren sind die „Kinderopern“ Where the Wild Things Are und Higglety Pigglety Pop!, beide über Libretti von Maurice Sendak.