57th annual Grammy Awards - Feb. 8, 2015

Sam Smith poses with his awards for Best New Artist, Best Pop/Vocal Album for "In the Lonely Hour" and Song of the Year and Record of the Year for "Stay With Me" in the press room at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

From left, Paul McCartney, Rihanna and Kanye West perform "FourFiveSeconds" at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Beyonce performs "Take My Hand" during the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Madonna performs at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Lady Gaga and Tony Bennett, who won a Grammy for best traditional pop vocal album for "Cheek to Cheek," perform the song at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Katy Perry performs "By The Grace of God" at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Common, left, and John Legend stand after performing "Glory" from the film "Selma" at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Beck, background, watches Kanye West, who pretended to take the stage after Beck won album of the year for "Morning Phase," at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Smokey Robinson, left, presents Beyonce with the award for best R&B performance for “Drunk in Love” at the 57th annual Grammy Awards in Los Angeles, Feb. 8, 2015.

Sia, right, and Maddie Ziegler arrive at the 57th annual Grammy Awards at the Staples Center in Los Angeles, California, Feb. 8, 2015.

Pharrell Williams, left, performs "Happy" with composer Hans Zimmer at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Hozier performs "Take Me To Church" with Annie Lennox at the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.

Brian Johnson, left, and Angus Young of AC/DC perform at the start of the 57th annual Grammy Awards in Los Angeles, California, Feb. 8, 2015.