[1] After appearing at the Contrescarpe cabaret in 1962, she was discovered by the singer Mireille Hartuch, who featured her on her TV show Le Petit Conservatoire de la Chanson.

[1][2][3] Her second album, the experimental "Avec" poème (1966), released on the record label established by Marcel Mouloudji, contained both spoken and sung texts over electroacoustic music and musique concrète by the Surrealist-influenced composer André Almuró.

[1][2] She produced three albums in the early 1970s – Feu et rythme (1970), which won the Grand Prix du Disque from the Académie Charles Cros;[2] Répression (1972), which concerned censorship and was supportive of the Black Panther movement;[1] and Transit (1975), which she recorded with free jazz performers including saxophonist Maurice Merle.

"[1] Her 1979 album Je Veux Chaanter was recorded with, and included songs written by, children with mental disabilities in the Institut médico-pédagogique at Fontenoy-le-Château, and was performed partly with home-made instruments.

Magny moved to live near Aveyron in south-west France, and her recordings became more mellow in tone, her 1983 album Chansons pour Titine even including Cole Porter's "My Heart Belongs to Daddy".