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Macklemore
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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Frederick M. Brown/Getty Images
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Frederick M. Brown/Getty Images
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Lorde
Lorde performs “Royals” at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Matt Sayles/Invision/AP
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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.
Credit: Richard Shotwell/Invision/AP
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Lorde
Lorde poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.
Credit: Richard Shotwell/Invision/AP
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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.
Credit: Richard Shotwell/Invision/AP
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Miguel
Miguel poses backstage at the "Grammy Nominations Concert Live!" on Dec. 6, 2013, at the Nokia Theatre L.A. Live in Los Angeles.
Credit: Richard Shotwell/Invision/AP
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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.
Credit: Richard Shotwell/Invision/AP
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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.
Credit: Richard Shotwell/Invision/AP
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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.
Credit: Richard Shotwell/Invision/AP
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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.
Credit: Richard Shotwell/Invision/AP