Taylor Swift and LL Cool J host the Grammys' second biggest night.
The duo announced nominations for the top awards during an hour-long televised concert held in Nashville, Tennessee.
Performers included Maroon 5, fun., Ne-Yo and The Band Perry, who performed a tribute to Johnny Cash with his song "Jackson."
Adding a twist to the normal announcement method, country artist Hunter Hayes sang the nominees for best pop album, a tight contest between Maroon 5, Kelly Clarkson, Pink, fun. and Florence and the Machine.
The winners will be announced during the Grammys' biggest night on February 10, 2013.
