People United States of America John Duykers peoplepill id: john-duykersJD 2 views today 14 views this weekAmerican opera singerJohn DuykersBiographyListsAlso ViewedListsJohn Duykers is in following listsBy field of workNotable American musiciansGender:Male, Born in:Years 1930 to 1969By work and/or countryNotable American SingersGender:Male, Born in:Years 1930 to 1969Notable American Opera singersGender:Male, Born in:Years 1930 to 1969From our partnersSponsoredJohn Duykers