Metallica's 1991 album Metallica had the working title Married to Metal before the band chose its final title.
The title was connected to a difficult period during the recording sessions. Kirk Hammett, Lars Ulrich, and Jason Newsted were all divorcing their wives while the album was being made, so Married to Metal began as a private running joke around the band.
Other names were considered, including Five, reflecting the album's position as Metallica's fifth studio release, and the title of one of its songs. The group ultimately chose the simple eponymous title Metallica. That decision matched the album's stripped-down visual identity and direct musical approach.
Listeners later supplied the nickname The Black Album because the original cover placed nearly invisible black emblems against a black background. Married to Metal was not the official release title, and neither Five nor any song title replaced Metallica on the finished record.