What was the title of the lead single from Metallica's 1991 self-titled album?

“Enter Sandman” was the lead single from Metallica's 1991 self-titled album.

Elektra released the single on July 29, 1991, shortly before the album arrived. It introduced the record's heavier but more streamlined direction and quickly became a major international rock hit.

The music was credited to Kirk Hammett, James Hetfield, and Lars Ulrich, while Hetfield wrote the lyrics. Hammett brought the initial riff idea, and the band developed it into a tightly arranged song centered on a memorable main guitar figure.

The track's success helped propel the album beyond the band's existing metal audience. It reached number 16 on the US Billboard Hot 100 and later received major video and radio exposure. The song's prominence sometimes leads people to mistake it for the album's title track, but the album is officially named Metallica.