Ce que je sais is a 1998 album recorded by French singer Johnny Hallyday. It was released on 23 January 1998, and achieved success in France and Belgium (Wallonia), where, however, it failed to top the charts, being blocked by the soundtrack album of The Titanic. It provided four singles in France, but a sole top ten hit : "Ce que je sais" (#9), "Debout" (#58), "Allumer le feu" (#39) and "Seul" (#32). The album was entirely composed by French artist Pascal Obispo, helped on certain songs by Zazie and Lionel Florence.