Justin Bieber made a surprise (and increasingly rare) onstage appearance Friday to join SZA for "Snooze" at Inglewood, California's SoFi Stadium.

New Orleans rapper Rob49 talks about his viral hit 'WTHelly,' being friends with Justin Bieber, and more in our new interview.

In Machine Gun Kelly's new song "Cliché," the rocker—who welcomed a baby girl with Megan Fox in March following news of their breakup—asked an ex, "Would you stay with me?" ...