Related Information for Betty Mars Betty Mars (born Yvette Baheux, July 30, 1944 in Paris - died February 20, 1989 in Paris) was a French singer and actress, best known for her participation in the 1972 Eurovision Song Contest.Mars was the youngest of ten children and from an early age showed a flair for dance and acrobatics. By age 16 she was appearing in revues and spent the 1960s travelling as a lead performer in shows around Europe and the Americas.In 1971 she was spotted singing in cabaret by composer Frédéric Botto.. read more