Jacques Prévert (February 4, 1900 – April, 11 1977) was a famous French poet and screenwriter.
Amongst others he wrote the script for the fantastic film Les Enfants du Paradis [Children of Paradise/Kinder des Olymp] (1945) by Marcel Carné.
Here we see Prévert reading his two poems Le temps haletant and À quoi rêvais-tu, accompanied by a guitar player. From 1955.
Do you see the kid hiding in the back?
You will find translations into English here.