What was Metallica's The Black Album's first track to be released as a single?

“Enter Sandman” was the first track released as a single from Metallica's The Black Album.

Elektra Records issued the song on July 29, 1991, ahead of the album's August 12 release. Its heavy but accessible riff made it an effective introduction to Metallica's new production style and helped make the song the record's best-known early radio track.

The single reached number 16 on the US Billboard Hot 100 and performed strongly on rock charts internationally. Its music video added to the song's visibility, giving many casual listeners their first exposure to Metallica.

The album later produced four more official singles: “The Unforgiven,” “Nothing Else Matters,” “Wherever I May Roam,” and “Sad but True.” “Don't Tread on Me” was promoted to rock radio but was not issued as a commercial single, which is why it does not change the answer.