Lyricist of Henri Betti from 1941 to 1946 for which he wrote the lyrics of many hits like "La Chanson du Maçon" (1941), "La Fête à Neu-Neu" (1943) and "Le Régiment des Mandolines" (1946).
In 1948, Freda Betti participated in a radio program broadcast on Paris Inter where she sang "Le Bonheur du Monde" which was written in 1946 by Maurice Vandair (lyrics) and Henri Betti (music).