The cinematographic illustration of fifteen cheerful, tender or ferocious songs that made the success of the songwriter of the comedian Noël-Noël. After "Les casses pieds", "La vie chantée" stages several sketches of daily life where everyone can recognize themselves and laugh about it.

Alexa, Fernand, and Louis form a tender yet unconventional trio in a quiet suburban home. Fleeing failed marriages and societal expectations, they build a life rooted in love and mutual support. But their unorthodox arrangement stirs suspicion, especially from a curious police inspector whose own life is about to change in unexpected ways.