Miranda Lambert and Carrie Underwood team up for "Somethin' Bad." Pop angel Lorde, who took Billboard Music trophies for breakthrough artist and top rock song for the ubiquitous hit "Royals," performs in front of blue-tinted stage lights. Singer Dan Reynolds and guitarist Wayne Sermon of Imagine Dragons jam on the big stage in their Las Vegas hometown.

Here are some of the memorable images as the music industry celebrated its big night at the Billboard Music Awards.


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