This is a famous French song amazingly performed by Les Frères Jacques. The song is almost entirely composed with two notes and harmonized as a part-song by Roland Lemêtre. Trying to avoid the monotony the composer wanted to put into the song, every verse have been reworked and are now written with upper semitone key to each verse (from B-flat to D Major so there are 5 verses). It was harmonized and intended for every level of choirs, it can also be acted out. We can also suggest to you the three-part voice with piano version by Daniel Bonnet.