February 28, 1948, she sang the French song "C'est si bon" (composed in 1947 by
Henri Betti with the lyrics of
André Hornez) with
Jean Marion on the piano at the Hotel Negresco during the first "Nice Jazz Festival".
Louis Armstrong was present and loved the song. June 26, 1950, he recorded the American version of the song (English lyrics by
Jerry Seelen) in New York with
Sy Oliver and his Orchestra. When it was released, the disc was a worldwide success and the song was then performed by the greatest international singers. In 2017, she was the first centenarian performer of this song. The second was
Jane Morgan in 2024.