A cappella is normally more suited for talent shows and holidays than radio. But this single, from the self-titled debut of the genre's biggest group, is different: There's real funk behind the jazz-hands charisma, invoking Stevie Wonder and early Justin Timberlake.

Subscribe to billboard biz to continue reading this article and thousands more. subscribers get:
  • 24/7 coverage of every genre and sector of the business with over 150 exclusive charts
  • Bulletin: Breaking stories, chart info and analysis sent directly to your inbox every weekday
  • Billboard Magazine iPad Edition: An enhanced version of the magazine with video, photo galleries and playable charts
  • Archives: A rich history of articles and exclusive charts

Join now or Log In