Read this: Metallica: 20 things you probably didn’t know about The Black Album
"With contributions from countries all over the globe from the U.S. to Nigeria, there are tracks from singer-songwriters, country artists, electronic, and hip-hop artists alongside punk rockers, indie darlings, icons of rock, metal, world music, and many, many more covering the entire spectrum from musicians we’ve shared the stage with, to some who were not even born yet when the original album was released!” Metallica previously explained of The Metallica Blacklist.
"In addition to raising money for charity, we wanted to show that Metallica’s music transcends genres, distance, and cultures, and we like to think that – with everyone’s help – we’ve done just that. It was important to us that the artists could choose whichever song they most connected to; it didn’t matter if we already had multiple versions of a song, if an artist wanted to cover that song, so be it. We were honored to have artists of this caliber want to be a part of the project and we hope you enjoy listening as much as we enjoyed putting it all together!
"One album, 12 songs, 53 artists, unlimited possibilities.”