Anne Constantin maintains close relationships with esteemed figures in the field, such as Rosemarie Landry, Francis Perron, Monique Pagé, and Robin Weelher at the University of Montreal, as well as with the Cité de la Voix in Vézelay. She actively contributes to the French Association of Singing Teachers (AFPC-EVTA France), where she served as president for six years.

Anne Constantin studied under mezzo-soprano Jane Berbié at the National Conservatory of Music in Paris, earning first prizes in singing and lyric art. She furthered her education at the Opera School of Paris alongside Denise Dupleix. Her performance career includes numerous roles in operas and operettas, performing at prestigious theaters under the baton of renowned conductors.

Anne Constantin has dedicated herself to the oratorio repertoire and collaborated with various orchestras. Her interest in contemporary music has led to collaborations with notable composers for the creation and performance of their works.