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), What Can I Do? (lyrics by Édith Piaf) and The Windmill Song (lyrics by Jacques Plante) that were performed by Yves Montand. Henri Betti was born at 1 rue Barillerie in the district of Vieux-Nice in a modest family : his father was a house ...