Mac DeMarco surprised fans during a performance at Japan's Fuji Rock Festival this weekend with a guest appearance from Post Malone, who arrived with an egg shaker in tow to amp up the percussion. One person in attendance captured the moment on video and posted it to YouTube.

Malone's entrance took place while DeMarco was covering a Japanese ’60s crooner classic titled "Sukiyaki" by Kyu Sakamoto. As the Beerbongs & Bentleys artist took to the stage with an egg shaker clutched in his palm, the audience erupted. Or, as the YouTube description reads, it was “at this point [that] everyone in the audience is flipping their collective shit.”

Watch the experience in full below.

Were you at Fuji Rock Festival this year? Share your experience in the comments below.

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