Henri Betti, born Ange Betti (24 July 1917 – 7 July 2005), was a French composer and a pianist. Pianist and composer of Maurice Chevalier from 1940 to 1945, Henri Betti is best known for composing the music of the songs C'est si bon (lyrics by André Hornez), Mais qu’est-ce que j’ai ? (lyrics by Édith Piaf) and Maître Pierre (lyrics by Jacques Plante).