Question: The album "Metallica", by the band of the same name, included what song that deals with a child's nightmares?

Context paragraphs:
Creeping Death: "Creeping Death" is a song by the American heavy metal band Metallica, released as the lead and only commercial single from their second studio album "Ride the Lightning" (1984) ("Fade to Black" and "For Whom the Bell Tolls", from the same album, were issued as promotional singles).  Written from the perspective of the Angel of Death, it describes the (Exodus 12:29).  One of Metallica's most frequently performed songs, it has been played live 1,458 times (third only to "Seek & Destroy" at 1,484 and "Master of Puppets", at 1,553), and it has occasionally been used on various tours as the opening song of the band's set.  It stands as a classic example of the band's thrash style, albeit slower than the material on their first album, "Kill 'Em All".  The song's middle section, with its ominous chants of "Die!"  set to a phrygian mode chord progression, is a fan participation staple during Metallica shows.

Enter Sandman: "Enter Sandman" is a song by American heavy metal band Metallica.  It was released as the first single from their eponymous fifth album, "Metallica" in 1991.  The music was written by Kirk Hammett, James Hetfield and Lars Ulrich.  Vocalist and rhythm guitarist Hetfield wrote the lyrics, which deal with the concept of a child's nightmares.

Seek &amp; Destroy: "Seek & Destroy" is a song by the American heavy metal band Metallica and ninth track from their debut studio album, "Kill 'Em All".  It was also featured on the demo "No Life 'til Leather".  It was the first song the band recorded in a studio.  "Seek & Destroy" has been frequently performed at the group's concerts since its live debut in 1982 and had been Metallica's closing song from the Madly in Anger with the World Tour to the Metallica By Request Tour.  It is the second-most performed song in the band's history, having been played 1,484 times as of September 2017, ahead of "Creeping Death" (1,458), but behind only "Master of Puppets" (1,553).

The Unforgiven (song): "The Unforgiven" is a power ballad by American metal band Metallica.  It was released as the second single from their eponymous fifth album "Metallica" (also known as "The Black Album").  Though one of the slower tracks on the album, its chord progression is distinctly one of the heavier.  The song deals with the theme of the struggle of the individual against the efforts of those who would subjugate him.

Nothing Else Matters: "Nothing Else Matters" is a song by American heavy metal band Metallica.  It was released in 1992 as the third single from their self-titled fifth studio album, "Metallica".  The song peaked at number 11 on the "Billboard" Mainstream Rock Tracks chart as well as top-ten positions on many European charts.  "Nothing Else Matters" was featured as a playable track in the music video game "".  Recognized as one of Metallica's best known and most popular songs, it has become a staple in live performances.  The song has been covered nearly 100 times.

Hero of the Day: "Hero of the Day" is a power ballad by American heavy metal band Metallica from their 1996 album "Load".  The song was first recorded on December 13, 1995, and was the first song on "Load" to be recorded.  The song was also Metallica's second single release from the album.  A promotional video for the track was also filmed.  It became their second consecutive number-one hit on the US "Billboard" Hot Mainstream Rock Tracks chart.  It is one of the few Metallica songs written primarily in a major key.

Kill 'Em All Tour: The Kill 'Em All Tour was the first major concert tour by American thrash metal band Metallica.  The tour, which was sponsored by their record label, Megaforce Records, was in support of their debut album, "Kill 'Em All", released two days before the start of the tour.  Metallica supported Raven, Venom and Twisted Sister while supporting acts for Metallica included Anthrax and Armored Saint.  Tour setlists consisted of songs off their debut album, cover songs including Diamond Head's "Am I Evil? " and Blitzkrieg's self-titled song, and songs that would be released on "Ride the Lightning."

Damage, Inc. Tour: The Damage, Inc.  Tour was a concert tour by American thrash metal band Metallica in support of the band's third studio album, "Master of Puppets".  The name of the tour is taken from the last song on the album.  It began on March 27, 1986 and ended on February 13, 1987.  Metallica supported Ozzy Osbourne from March to August, headlined a string of U.S. dates between May 23 and June 7 with Armored Saint, and were the main act throughout the fall and winter with support from Anthrax and Metal Church.  Roadie John Marshall, who also played guitar in "Metal Church", filled in for James Hetfield on rhythm guitar between July 27 and September 25 following a mid-tour skateboarding accident resulting in a broken arm.  Hetfield, Cliff Burton and Kirk Hammett originally decided to dismiss Lars Ulrich upon completion of the tour, but plans were set aside upon the death of Burton on September 27, 1986 in a tour bus accident near Ljungby, Sweden while en route from Stockholm to Copenhagen, Denmark.  Performances that were scheduled for October were postponed and the band hired a new bassist, Jason Newsted to complete the rest of the tour.  Metallica also became the first band of the Big Four to cross the Iron Curtain, with two concerts in Katowice, Poland on February 10 and 11, 1987.

Waking into Nightmares: Waking into Nightmares is the second album by the American thrash metal band Warbringer, released on May 19, 2009 in the U.S. and May 25, 2009 in Europe.  It was produced by Gary Holt, guitarist of thrash metal band Exodus.  Artwork done by Dan Seagrave.  A video for the song Severed Reality was produced.  Walking into Nightmares sold around 2,000 copies in its first week of release in the U.S.

Metallica (album): Metallica (commonly known as The Black Album) is the fifth studio album by American heavy metal band Metallica.  Released on August 12, 1991 by Elektra Records, it received widespread critical acclaim and became the band's best-selling 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". " Don't Tread on Me" was also issued to rock radio shortly after the album's release, but the song did not receive a commercial single release.  The album marked a change in the band's sound from the thrash metal style of the previous four albums to a slower one.  Metallica promoted the album with a series of tours.  In 2003, the album was ranked number 252 on "Rolling Stone"' s 500 greatest albums of all time.

Supporting paragraphs: Metallica (album) Enter Sandman
Answer: Enter Sandman