Sugarland and Taylor Swift have been added to the list of performers at the Grammy Awards on Sunday (Feb. 8) in Los Angeles. Sugarland is nominated for best country performance by a duo or group with vocals ("Stay") and best country collaboration with vocals ("Life in a Northern Town" with Little Big Town and Jake Owen). Swift will also join Miley Cyrus for a performance. Other artists performing on the show include Kenny Chesney, Kid Rock, Carrie Underwood, and Robert Plant and Alison Krauss. The Grammys will air live on CBS.