Watch Skrillex Perform 'Gimme Chocolate!!' with J-Pop Trio Babymetal at Ultra Japan

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Skrillex performs during 2015 Billboard Hot 100 Music Festival - Day 2 at Nikon at Jones Beach Theater on Aug. 23, 2015 in Wantagh, New York.

Skrillex's Ultra Japan set won't soon be forgotten in Tokyo.

The globe-trotting DJ/producer brought out heavy metal J-pop trio Babymetal during his festival-closing performance on Sunday (Sept. 20).

Babymetal Premieres 'Gimme Chocolate!!' Live Cut, Makes Snacks Shred So Hard: Exclusive

Re-embracing his hard rock roots, Skrillex joined them for a crushing rendition of their hit single "Gimme Chocolate!!" that sent the crowd at Tokyo Odaiba Ultra Park into conniptions.

Watch the full video clip of their performance below: