Rêves is a posthumous compilation recorded by FrenchsingerGrégory Lemarchal. It was released in November 2009 and contains all his previous singles and some cover versions of various artists, including Céline Dion and Daniel Balavoine, and two unpublished songs, the first two tracks of the album (although Olivier Ottin, the former manager of the singer, had earlier said in an interview with the Nouvel Observateur that the album would be fully composed of unpublished songs). "Je rêve" is also the first song written by Lemarchal.
According to Universal Music website, some rights and benefits from the album's sales will be donated to Grégory Lemarchal association to fight against cystic fibrosis. The first single off the album will be "Je rêve" and its music video will be composed of images from a documentary entitled À l'ouest d'un souffle nouveau and funded by Lemarchal association. The song features six former patients who had the chance to receive a transplant.
The album debuted at number one on the French Compilations Chart on 22 November 2009 with 37,563 units sold.