Which Metallica song features James Hetfield, rather than Kirk Hammett, playing the studio guitar solo?

“Nothing Else Matters” is the Metallica song on which James Hetfield plays the studio guitar solo instead of Kirk Hammett.

The song was written by Hetfield and Lars Ulrich and appeared on Metallica's 1991 album. It began as a private guitar piece Hetfield played while on the phone, but it developed into a power ballad that became one of the band's most widely known songs.

Kirk Hammett does not play on the studio recording. Hetfield performs the guitar parts, including the solo, while orchestral arrangements were written by composer Michael Kamen. Hammett later learned the song for live performances.

This detail is often confused with the song's later concert arrangements, where Hammett may participate. The studio version is the relevant recording for this question. “Nothing Else Matters” was released as the album's third single on April 20, 1992.