Dorothea Adriana Maria Koen-Ketelaar ( Amsterdam , December 9 1925 ) is a Dutch announcer for years for NCRV worked. She originally wanted to be a ballet dancer, but because of theSecond World War, this was not possible. Through her ​​husband Peter Koen she came in radio contact. Late forties In 1951 she did a screen test for television and became announcer. She went more with fellow announcers at events and also asked for openings and fashion shows.