Pop music originated in the 1950s from rock 'n' roll and became the most popular music genre of the past 50 years. It is usually listened to by people from young children to young adults. Popular pop artists include One Direction, Katy Perry, Lady Gaga, Little Mix, and Justin Bieber. Pop magazines feature bright, colorful mastheads and covers to attract their target audience of females. They showcase current and new pop artists to provide information and promote new music.