I can provide more details on the thriller plot , the full lyrics of the Gainsbourg song, or the symbolism in poetry. De sinistres papillons noirs | LiederNet
The term is famously used in the poem (Night) from Albert Giraud's cycle Pierrot Lunaire (1884), later set to music by Arnold Schoenberg. Les papillons noirs
In French, the term "papillons noirs" is a 19th-century metaphor for dark thoughts , worries, or melancholy. Lyrics Highlight: I can provide more details on the thriller