Sans Logique - B-side: "Dernier Sourire"

B-side: "Dernier Sourire"

The vinyl's B-side contains a new song, "Dernier Sourire", which is very sad. This moving song tackles the theme of the disappearance of a loved one. With simple words, Farmer evokes the passage of the state of living to that of death through a description an ill-person in the process of dying in a hospital room, and the injustice felt in this kind of situation. This song was probably composed for Max Gautier, Farmer's father, who died on 11 July 1986, and in the lyrics she tells him some things she had not had time to say when he was alive. About its structure, the song has "a classic accompaniment, a simple melody and no refrain". After being chosen instead of "Que mon cœur lâche" to feature on the 1992 album Urgence - 27 artistes pour la recherche contre le SIDA, the song was especially re-recorded in a new version, becoming the anthem of people who come at the end of life and appeared to be as "a kind of cruel poem about the end of life and the injustice of death which blows too quickly our candles". The song was generally well received, as stated by the author Erwan Chuberre who provides in one of his books positive critics from fans.

Farmer performed the song first on 1 November 1989 on French television show Sacrée Soirée on TF1. It was originally scheduled to be performed during the 1989 tour, but it was eventually replaced by "Puisque...". The song was sung during the Mylenium Tour; when performing on stage, Farmer wore a white transparent dress with a plunging neckline in the back, a sailing on the shoulders, shoes with high heels, and a white large necklace. There is no choreography, and when she sang for the second time the first verse at the end of the song, she began to cry; she was only accompanied by the piano. In 2000, this live version was the second track of the CD single for "Dessine-moi un mouton". "Dernier Sourire" was covered by Michał Kwiatkowski on a weekly program of Star Academy France, in 2003, but his version was not released as a single.