Complex sentence: Peter Allen (September 17,1920--October 8,2016) was an American broadcaster and radio announcer, noted for hosting the Saturday afternoon radio broadcasts of the Metropolitan Opera for some 29 years.
Split into simpler sentences: Peter Allen (September 17,1920--October 8,2016) was an American broadcaster and radio announcer. He is noted for his having been the announcer for the Saturday afternoon radio broadcasts of the Metropolitan Opera for some 29 years.