Which producer's son supplied the child voice heard on Metallica's “Enter Sandman”?

Bob Rock's son supplied the child voice heard on Metallica's “Enter Sandman.” The album credits list him as the additional musician who provided the child's spoken part.

The song's subject is childhood fear, especially the uneasy world of bedtime prayers, nightmares, and imagined monsters. A child's voice strengthens that perspective and contrasts with James Hetfield's forceful adult vocal. The spoken prayer and bedtime imagery are central to the song's identity rather than incidental studio decoration.

Bob Rock was producing the album and was closely involved in the recording sessions. His son therefore became part of one of the most recognizable vocal details on the record. The contribution is easy to misattribute because Metallica's four members dominate the performance and because the spoken section sounds like part of the song's narrative rather than a conventional guest appearance.

“Enter Sandman” was the first single from Metallica and the album's opening track. Its combination of a memorable riff, ominous subject matter, and carefully shaped production helped introduce the Black Album sound to a much wider audience.