Metallica's new album is classified secret before its release, as for the last record of the megastar. The Californian quartet has managed to "transcend genres, playing Freddie Mercury's tribute concert while he comes from metal," said Luc Frelon, programmer of the French web radio Fip Metal.

The previous world tour, which began in 2016 before being interrupted in 2020 due to the health crisis, brought in more than $400 million, according to Forbes magazine. The group even bought a vinyl pressing plant for its own needs.