"Enter Sandman" is a song by American heavy metal band Metallica. It is the opening track and lead single from their self-titled fifth album, released 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.
A young man's mother is bitten by a Sumatran rat-monkey. She gets sick and dies, at which time she comes back to life, killing and eating dogs, nurses, friends, and neighbors.
