If Billy Eichner had a show, it may be just like "Carpool Karaoke" except in Hollywood's supermarkets. In a Gelson Supermarket in Hollywood, famed metal band Metallica made a store employee's day by piling in the "cold cuts" line and then singing their famous 90s hit "Enter Sandman. Billy Eichner's crew and bystanders with their smartphones above their heads captured the entire footage.

According to celebrity news network TMZ, the "metal legends" of Metallica, James Hetfield, Lars Ulrich, Kirk Hammett and Robert Trujillo, the band had let the store employee sing lead vocals. In the video, all of them were singing the song. The celebrity news website said it was similar to "Carpool Karaoke -- with a [half] pound of shaved turkey [to go]."

Observers speculate that the band is using viral recognition to promote their newly-released 2016 album "Hardwired." Last Thursday, the band had played in the Los Angeles' Fonda Theater -- which according to Forbes is quite a small venue compared to their usual events in Los Angeles' Rose Bowl, Forum and Sports Arena.

The news website said the show would create subliminal buzz and makes it "special" for fans. A stadium-sized Metallica concert is just "another stop on the tour" -- meaning local news and TV may cover it but it does not feel "genuine" and "intimate" like small venue gigs.

Metallica is a metal band formed in the 80s. Originally having Dave Mustaine from Megadeth, Metallica has gone from their punk and aggressive sound in the 80s to mellow out and introduce a grunge feel in their songs in the 90s -- which produced their worldwide hit "Enter Sandman." Their return to their roots is evident in albums including "Death Magnetic" and the more recent "Hardwired... To Self-Destruct."

The band has drawn criticism over the years but they never failed to deliver for their most loyal fans. The band -- despite their star status -- continues to play in charity concerts such as the one in Bridge School's Benefit concert with famed guitarist Neil Young.