French composer, ethnomusicologist and translator.

Born on 24 February 1884 in Paris, and passed away in the same city on 2 August 1964. She studied organ with Abel Decaux, composition with Vincent d'Indy, and counterpoint with Maurice Emmanuel at the Schola Cantorum. She accompanied her husband, the anthropologist Raoul d'Harcourt, on his trips to South America. In 1912 the couple travelled to the Andes. The results of her fieldwork were published in 1922, as "La musique indienne chez les anciens civilisés d'Amérique. II Le folklore musical de la région andine, Équateur, Pérou, Bolivie", a study that included the first collection of Quechua songs in standard European notation. She also published, with Raoul d'Harcourt, "La musique de Incas et ses survivances" (1925) and "Chants populaires de Pérou" (1924-1925). Additionally, she authored several books on Canada's indigenous musical heritage. She worked with Marius Barbeau, writing articles for "Romancero du Canada" (1937) and "Alouette" (1946). In 1950, she donated a study and 372 recordings of Canadian music to the audio library of the Musée National des Arts et Traditions Populaires in Paris. In 1956 her work "Chansons populaires françaises du Canada: leur langue musicale" was released simultaneously in Paris and Quebec. After receiving a recording from Guy Stresser-Péan, in 1963 she transcribed the music of the traditional Mexican dance known as the "Danza del Volador". She contacted Manuel de Falla during one of his visits to Paris, asking for a meeting.

As an author, she is best-known for her modal compositions and transcriptions of South American folk songs. However, she also wrote the music for the ballet "Raïmi ou la fête du soleil" (1925); orchestra pieces like "Trois mouvements symphoniques" (1932) and "Symphonie No. 2 'Les Saisons'" (1951); and works for chorus and for voice with accompaniment, such as "L'amour par terre" (1905) or "Au printemps" (1956).