Grammy Awards 2014 nominations concert

Wanz, left, and Macklemore perform “Thrift Shop” at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

LL Cool J

Host LL Cool J announces the nominees for song of the year at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Taylor Swift

Taylor Swift sings "I Knew You Were Trouble" in a pre-taped performance from Australia during the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Keith Urban and Miguel

Keith Urban, left, and Miguel perform “Ain’t No Sunshine” at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Nelson Mandela tribute

An image of Nelson Mandela appears on screen at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Ed Sheeran

Ed Sheeran announces nominees for best pop duo/group performance at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Enrique Iglesias

Enrique Iglesias announces nominees for album of the year at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Katy Perry

Katy Perry performs "Roar" via satellite from Canada during the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Lorde

Lorde performs “Royals” at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Kelly Rowland

Kelly Rowland announces nominees for best country album at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Arsenio Hall

Arsenio Hall announces nominees for best new artist at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Melissa Etheridge and Pauley Perrette

Melissa Etheridge and Pauley Perrette announce nominees for record of the year at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Robin Thicke and Verdine White

Verdine White, of the musical group Earth, Wind and Fire, left, and Robin Thicke perform “Blurred Lines” with T.I. at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Robin Thicke, Verdine White and T.I.

From left, Verdine White, of the musical group Earth, Wind and Fire, Robin Thicke and T.I. at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

LL Cool J

LL Cool J poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Lorde

Lorde poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Verdine White

Verdine White, from the musical group Earth, Wind and Fire, poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Miguel

Miguel poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Keith Urban

Keith Urban poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Ed Sheeran

Ed Sheeran poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Melissa Etheridge

Melissa Etheridge poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.

Macklemore & Ryan Lewis

Ryan Lewis, left, and Macklemore pose backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.