Which Metallica song on Metallica began with a riff written by Jason Newsted?

“My Friend of Misery” began with a riff written by Jason Newsted for Metallica.

Newsted originally intended the musical idea to become an instrumental. It was developed into a full song for the album, giving the bassist a notable songwriting contribution during a period when most of Metallica's material was written by James Hetfield and Lars Ulrich.

The song appears near the end of the album, after “The God That Failed” and before “The Struggle Within.” Its brooding structure and prominent bass foundation fit the record's darker themes while also reflecting Newsted's role in the band's rhythm section.

The track is sometimes overlooked because the album's singles and major videos dominate public discussion. That makes its writing history a useful distinction: Newsted supplied the original riff, while the finished composition credited the band members involved in shaping the song. It was not released as one of the album's five commercial singles.