In 2005, she wrote the lyrics for 10 out of 12 songs for Louis Bertignac's new album "Longtemps", and performed two duets with him on the album, "Les Frôleuses" and "Sans toi". In 2006, Bruni recorded "Those Little Things", an English-language translation of the Serge Gainsbourg song "Ces petits riens" for the tribute album "Monsieur Gainsbourg Revisited". She took part in the opening ceremony of the 2006 Winter Olympics in a parade paying tribute to the Italian flag.