 In the original cover of the album, the only printed lyrics were a section of "Lumières de vie", where the character begs to be spoken of love in order to overcome both nights and days ("...Lumières de vie... parle-moi d'amour, assez pour éclipser les deux [la nuit, le jour] pour toujours")., the co-founder of Harmonium, left the band at the beginning of the recording of "L'Heptade".He thus appears only as contributing to the guitar playing of the first song, as well to the lyrics in many songs of the album.