The album "Metallica", by the band of the same name, included what song that deals with a child's nightmares?
Metallica (album):  "Metallica" produced five singles that are considered to be among the band's best-known songs, which include "Enter Sandman", "The Unforgiven", "Nothing Else Matters", "Wherever I May Roam", and "Sad but True". " Enter Sandman: "Enter Sandman" is a song by American heavy metal band Metallica. Enter Sandman:  Vocalist and rhythm guitarist Hetfield wrote the lyrics, which deal with the concept of a child's nightmares.
Enter Sandman