Have you heard of Fifth Harmony? If not, it might be time to get up to speed. The girl band came together after struggling to make it individually on the reality show X-Factor, where they only placed third. However, since the show’s end the group has garnered millions of young fans on YouTube, Twitter, and other platforms. The “social-media frenzy” around the singers earned them Simon Cowell’s support, and their fame has grown thanks to a series of YouTube covers and constant online conversation with their followers. The band's fandom, the Harmonizers, are intensely devoted to the group, likely because of their youth, diversity, and authentic, savvy social media voices. Fifth Harmony’s first album was just released, so expect to hear more from them in the coming year. (Vulture)