French actress Marion Cotillard has collaborated with Franz Ferdinand, taking lead vocals on the band's new song, The Eyes of Mars, which they wrote for a Dior ad campaign. Cotillard is no stranger to belting out a few tunes, having portrayed Edith Piaf in La Vie en Roseand crooning her way through several songs in recent film Nine- but you can decide for yourself by listening to the track at www.ladydior.com.