[1] During the Algerian War, he served in the French Army, although he was based in Meknes, Morocco.

[1] Jouannest began his career as a pianist in music halls.

[1] For example, he composed classic songs for Jacques Brel like "Ne me quitte pas", "Ces gens-là", "Bruxelles", "Mathilde" and "Les Vieux".

[4] He also composed songs for younger artists like Miossec, Benjamin Biolay and Abd al Malik.

[1] Jouannest supported Jean-Luc Mélenchon in the 2012 presidential election.