Supermarket attendees were treated to a special performance from Metallica when the rock band took part in an impromptu delivery of “Enter Sandman” while perusing a deli counter on Thursday.

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According to TMZ, James Hetfield, Lars Ulrich, Kirk Hammett and Robert Trujillo stopped by a Hollywood Gelson’s supermarket with comedian Billy Eichner from “Billy On The Street” for what we can only hope becomes the newest viral video masterpiece — a la “Carpool Karaoke”.

Footage from the moment shows the band head-banging to the classic hit and cheering their devoted fans on, including a die-hard rocker behind the deli counter.

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Another fan also went “head-to-banging-head” earlier this week when they played a game of “Who Knows Metallica?” on Wednesday’s episode of “Jimmy Kimmel Live!”. Watch below.