It consists of Thomas Mars ( vocals ) , Deck D'Arcy ( bass ) and Laurent Brancowitz and Christian Mazzalai who play guitar . Vocalist Thomas Mars , bassist Deck d'Arcy , and guitarist Chris Mazzalai started as a garage band based out of Mars ' house in the suburbs of Paris . In 1995 , Laurent Brancowitz , Mazzalai 's older brother , permanently joined the band on guitar after the end of the short-lived band Darlin ' he formed with Thomas Bangalter and Guy-Manuel de Homem-Christo ( who together became Daft Punk ) .