When Henri Betti sings "C'est si bon" at the piano, he changes the lyrics "Bras dessus, bras dessous" with "Avec mon p'tit Pitou". "Pitou" was the nickname of his son François Betti who was born five years earlier.
In this TV show, the three standards of the French song are played at the piano by their composers : Henri Betti for "C'est si bon", Louiguy for "La Vie en Rose" and Joseph Kosma for "Les Feuilles Mortes".