List of winners at the 55th Grammy Awards

Here are the winners of some of the main categories at the 55th Grammy Awards, two hours into the music industry's biggest annual show at the Staples Center in Los Angeles.

The key categories of best new artist, record of the year, and album of the year were due to be announced in the last hour of the show.

Song of the Year: "We Are Young" - fun.

Best Rock Song: "Lonely Boy" - The Black Keys

Best Rock Album: "El Camino" - The Black Keys

Best R&B Song: "Adorn" - Miguel

Best R&B Album: "Black Radio" - Robert Glasper Experiment

Best Rap Song: "Ni**as In Paris" - Jay-Z & Kanye West

Best Rap Album: "Take Care" - Drake

Best Country Song: "Blown Away" - Carrie Underwood

Best World Music Album: "The Living Room Sessions Part 1" - Ravi Shankar

Best Pop Vocal Album: Kelly Clarkson, for "Stronger"

Best Traditional Pop Vocal Album: "Kisses On The Bottom," Paul McCartney