Scheduled performers for the 43rd annual gala include Justin Bieber, Selena Gomez, 5 Seconds of Summer, Ariana Grande, Nick Jonas, One Direction, Demi Lovato, Carrie Underwood, Walk the Moon and host Jennifer Lopez. The event is held at the Microsoft Theater in Los Angeles. Winners are determined by fan voting in categories that include Pop/Rock, Country, Rap/Hip-Hop, Latin and Electronic Dance Music. Also featured are duets by Luke Bryan and Karen Fairchild, and Meghan Trainor and Charlie Puth.