Song Meaning
The narrator declares a singular purpose: to sing, but only of sadness. This isn't a choice born of preference, but of necessity, as they feel incapable of singing any other way. The reason for this profound melancholy is the absence of their "maîtresse" (mistress/lover), who has taken their heart. This absence is so absolute that the narrator believes singing is the only thing that keeps them alive.
The central tension lies in this forced artistic expression. Singing is presented as a life-or-death matter, a direct consequence of the lover's departure. The act of singing, usually a release or a joy, becomes a desperate act of survival, a way to cope with the void left by the stolen heart. The narrator must sing *for* the departed mistress, a paradoxical act of creation fueled by loss.
The most striking element is the stark, almost fatalistic connection between singing and existence. "Si je ne chante, je mourrai" (If I don't sing, I will die) is a powerful declaration of dependence. The lyrics suggest that the narrator's very being is now tied to this mournful output, a testament to the devastating impact of the lover's absence and the theft of their heart.