It appears there's been a mix-up in the provided information, as the text primarily discusses John Adams, a historical figure and the second president of the United States, rather than an artist associated with the genres of minimalism, avant-garde, and opera. However, based on the given genres and assuming John Adams is indeed an artist working within these fields, here's a short description:
John Adams is a visionary artist known for his innovative approach to minimalism, avant-garde, and opera. His work embodies a unique blend of contemporary and classical elements, creating a distinctive sound that resonates deeply with audiences.
German Translation:
John Adams ist ein visionärer Künstler, der für seinen innovativen Ansatz im Minimalismus, Avantgarde und in der Oper bekannt ist. Seine Arbeit verkörpert eine einzigartige Mischung aus zeitgenössischen und klassischen Elementen, die einen tiefen Eindruck auf das Publikum hinterlassen.