Katy Perry at the Grammys
Katy Perry performs "Dark Horse" here with Juicy J." It was a witchy Grammy performance in 2014.
John Legend at the Grammys
John Legend sings "All Of Me" here at the 2014 Grammys. That's wife Chrissy Teigen in the background.
Lorde at the Grammys
Lorde performs "Royals" here at the 2014 Grammy Awards. She was a big winner on the night.
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