Metallica's 1991 album Metallica contains 12 tracks.
The sequence begins with “Enter Sandman” and ends with “The Struggle Within.” Between them are widely known songs such as “Sad but True,” “The Unforgiven,” “Wherever I May Roam,” and “Nothing Else Matters.”
The album's standard running time is about 62 minutes and 40 seconds, unusually substantial for a major rock release of its era. On the original vinyl configuration, the 12 tracks were arranged across four sides, with three tracks on each side.
The track count is sometimes confused with the number of singles. Five songs received commercial single releases: “Enter Sandman,” “The Unforgiven,” “Nothing Else Matters,” “Wherever I May Roam,” and “Sad but True.” “Don't Tread on Me” received rock-radio promotion but was not a commercial single.