Which Metallica song was the band's lead single from the 1991 album Metallica?

“Enter Sandman” was the lead single from Metallica's 1991 album Metallica, known as The Black Album.

Elektra Records released the single on July 29, 1991, shortly before the album appeared on August 12. The song introduced many listeners to the record's streamlined sound through its massive guitar riff, repeated groove, and instantly memorable chorus.

The track had been the first song written for the album, although its lyrics were completed late in the process. Kirk Hammett originated the central riff, Lars Ulrich helped shape its rhythm, and James Hetfield wrote the final lyrics after being asked to develop a stronger idea.

“Enter Sandman” became Metallica's best-known commercial breakthrough. It reached number 16 on the Billboard Hot 100 and helped propel the album to number one. The other major singles followed later, but this first release established the album's musical and promotional identity.