BRIT Awards: Lorde, Disclosure Perform With AlunaGeorge's Aluna Francis (Video)

Lorde and Disclosure paired up for a performance at the BRIT Awards on Wednesday, presenting an enticingly upbeat new version of the New Zealander's breakout hit "Royals" before segueing into the U.K. electronic duo's single "White Noise."

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Standing in front of a giant illustration of her face (obscured, of course, by Disclosure's trademark white lines), Lorde grooved along to the percolating hi-hats, woozy synthesizers and stuttering rhythms newly bestowed on her No. 1 smash. Soon, the 17-year-old was standing face-to-face with AlunaGeorge's Aluna Francis, who made a surprise appearance and grinned through a straightforward take on "White Noise," from Disclosure's debut album, Settle.

The five-minute song is now for sale on iTunes, with proceeds benefiting the War Child charity, according to Fact.

Lorde took home the award for best international female at the BRIT Awards, held on Wednesday night at London's O2 Arena, while Disclosure's Settle is up for Mastercard British album of the year. Disclosure was nominated for four total awards at the ceremony, as was "Pompeii" group Bastille.

Last month, Lorde earned the song of the year award at the Grammys for "Royals," which spent nine weeks atop the Hot 100 chart. "Team," her follow-up single, clocks in at No. 9 on this week's tally.

Watch Lorde and Disclosure's full performance below.