Ariana Grande, Billboard 2014.

Ariana Grande Quiz: 10 Questions about the 'Problem' Star

We all know the words to "Problem" and can recognize to "Break Free," but how much do you really know about Ariana Grande -- her acting career, her influences, her collaborators and crushes? Test your knowledge of the rising pop superstar by taking our Ultimate Ariana Grande Quiz below!
5 Seconds of Summer, Miley Cyrus & Beyonce: Real-Time Twitter Chart Rewind Ep. 13

5 Seconds of Summer, Miley Cyrus & Beyonce: Real-Time Twitter Chart Rewind Ep. 13

Welcome to Billboard's weekly video show "Real-Time Rewind," which recaps the past week's hottest action on the new Billboard Real-Time Twitter Charts -- Trending 140 and Emerging Artists -- and the news that's driving the action. Hosted by Billboard's Joe Levy, you can watch episode 13, which features 5 Seconds of Summer, Miley Cyrus and Beyoncé.
Gary Miller

Rock Against Trafficking Founder Gary Miller Hopes to Launch at the Grammys

The founder of the all-star Rock Against Trafficking (R.A.T.) campaign is eyeballing next year's Grammy Week for the organization's public launch, with a variety of activities that include the release of an album featuring Police and Sting covers, a party and perhaps a performance at the awards ceremony.
Adam Levine and Gwen Stefani, 2014 Emmy Awards.

Hear Maroon 5's Gwen Stefani Collaboration 'My Heart Is Open'

Back in July, Maroon 5 guitarist James Valentine told Billboard his band was collaborating with Gwen Stefani for their new album, V. Well, that track, "My Heart Is Open," has finally surfaced, and it's an emotional piano ballad clearly crafted for Adult Contemporary radio domination.