Jean-Jacques Goldman again contributed to the making of the studio album, among others writing two songs : "Une fille de l'Est" (Eng: "A Girl from the East") in which Kaas praised her East French heritage and "Les chansons commencent" (Goldman had already worked with Kaas for her two previous studio albums).

The French singer Zazie wrote the track "J'attends de nous" (she had also participated in the writing of "Je compte jusqu'à toi", on Dans ma chair).

Yvan Cassar, Abraham Laboriel Jr. and Jean-Philippe Audin, who participated in Mylène Farmer's albums and concerts tours, were parts of musicians.

[2] In Belgium (Wallonia), the album had a great success : it debuted at #14 on May 29, then jumped to #7, finally hit #2 and remained at this position for three consecutive weeks.

[3] Le Mot de passe met a moderate success in Germany, where it peaked at #27, and Finland, where it hit #26 and stayed on the chart for four weeks.