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Herreman started her television as chief television announcer. In 1954 she joined INR to work with Eurovision. Herreman would continue to maintain her connections to Eurovision, providing the French language commentary for RTBF viewers on 10 occasions for the Eurovision Song Contest between the years of 1959 and 1979. She also commentated for RTBF viewers at the Jeux Sans Frontières between 1965 and 1982.