He went on to write more than twenty songs for her, including "J'm'en fous pas mal", "Bal dans ma rue", and "A quoi ça sert l'amour?", one of her most famous songs, which she sang as a duet with her second husband Theo Sarapo.
He co-authored with Charles Trenet the music for the song "Y'a d'la joie", and arranged many of Trenet's songs.