From its first album Night Visions in 2012, imagine Dragons, an American band from Las Vegas, broke the bank with 30 million copies sold. A success since confirmed, from Smoke + Mirrors in 2015 to Origins in 2018, with in between a third album Evolve in 2017. The quartet Imagine Dragons augmented on stage by a fifth member is one of the headliners of the inaugural edition, at the Longchamp racetrack, of the festival Lollapalooza Paris.