One was released as the third and final single from their fourth album ...and Justice for All. "One" was also the band's first Top 40 hit single, reaching number 35 on the Billboard Hot 100. It is one of the band's most popular songs and has remained a permanent live staple since the release of the album, making this the most played song from the album ...and Justice for All. Like "Fade to Black", and "Welcome Home (Sanitarium) (song)|Welcome Home (Sanitarium)]]", the song starts off slow and clean, but as the song goes on, becomes heavier and faster, leading up to a tapping solo by Kirk Hammett, and a dual guitar section by Kirk Hammett and James Hetfield.