The official title of the album is simply Metallica, but it will always be known as the Black Album. For me, this album was Metallica's at its peak.
Since today is the 30th of the album, below are two articles that told about the stories behind this album
Guardian - Drugs, divorce and incessant drum takes: Metallica on making metal’s biggest ever album
MusicRadar - Metallica The Black Album track-by-track interview with Bob Rock
Enter The Sandman
Sad But True ... live version
my favorite song
Nothing Else Matters mendayu