Mouron was born in Marseilles to a family of musicians: her father was an opera singer and her mother a songwriter. In 1987 Mouron won the Grand Prix Académie Charles Cros for her first album. She is referred to as a diva that cannot be compared with any other, with a voice that cannot be forgotten. Mouron sings in the tradition of Edith Piaf, Jacques Brel and Juliette Gréco. Her career went through various forms of artistic expression: form collaborating with Michel Fugain's Le Big Bazar to being a soloist at the Folies Bergère; from complex musical shows to simple performances featuring only the piano and her voice. The latter can be heard in her duet with the British musician Terry Truck with whom she has created the concert Mouron chante Brel. In this concert "she takes her versions of the songs into a mysterious territory which seems to embody the very spirit of Brel." She is a regular star at the Festival in Avignon.