Esperanza Spalding poses backstage with the award for Best New Artist at the 53rd annual Grammy Awards in Los Angeles on Feb. 13. Jae C. Hong/AP
Lady Gaga emerges from a translucent egg to perform 'Born This Way.' Ms. Gaga won Best Pop Vocal Album for 'The Fame Monster,' along with Best Female Pop Vocal Performance and Best Short Form Music Video for 'Bad Romance.' Lucy Nicholson/Reuters
The band Arcade Fire accepts the award for Album of the Year for 'The Suburbs.' Matt Sayles/AP
Members of the band Lady Antebellum accept the award for Best Country Album for 'Need You Now.' The group also won Record of the Year and Best Country Performance by a duo or group with vocals. Matt Sayles/AP
Drake and Rihanna perform 'What's My Name.' Rihanna won a Grammy for Best Dance Recording for her song 'Only Girl (In the World).' Lucy Nicholson/Reuters
Presenter Nicki Minaj gives Eminem his award for Best Rap Solo Performance for 'Not Afraid.' Eminem also won Best Rap Album for 'Recovery.' Lucy Nicholson/Reuters
Cee Lo Green and Gwyneth Paltrow perform 'Forget You.' Matt Sayles/AP
Canadian singer Justin Bieber (r.) and Usher perform 'OMG.' Usher won Best Contemporary R&B Album for 'Raymond V Raymond' and Best Male R&B Performance for 'There Goes My Baby.' Lucy Nicholson/Reuters
John Legend holds his awards for Best R&B Album ('Wake Up'), Best R&B Song ('Shine'), and Best Traditional R&B Vocal Performance ('Hang On In There'). Jae C. Hong/AP
Bruno Mars won Best Male Pop Vocal Performance for 'Just The Way You Are.' Matt Sayles/AP
Katy Perry performs her ballad 'Not Like The Movies.' Matt Sayles/AP
Mick Jagger performs 'Everybody Needs Someone to Love.' Lucy Nicholson/Reuters.
Bob Dylan performs 'Maggie's Farm' with Mumford and Sons and the Avett Brothers. Matt Sayles/AP
Kris Kristofferson and Barbra Streisand present the award for Album of the Year to Arcade Fire for 'The Suburbs.' Ms. Streisand performed 'Evergreen.' Matt Sayles/AP
US State Department spokeswoman Marie Harf told reporters that of the federal government responses to suspected North Korean hacking, 'some will be seen, some may not be seen.'
ByEric Tucker, Associated Press
Updated at 4:46 EST North Korea experienced sweeping and progressively worse Internet outages extending into Monday, with one computer expert saying the country's online access is "totally down." The White House and the State Department declined to say whether the U.S. government was responsible.