"Enter Sandman" is a 1991 song by the American heavy metal band Metallica. It was released as the first single from their eponymous fifth album, Metallica. 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.
The single achieved gold certification for more than 500,000 copies shipped in the United States, spurring sales of over 22 million copies for Metallica and propelling Metallica to worldwide popularity. Acclaimed by critics, the song is featured in all of Metallica's live albums and DVDs released after 1991 and has been played live at award ceremonies and benefit concerts.
It is among Metallica's most-played songs, having, as of August 27, 2012, been performed live by the band 1,108 times, behind only For Whom the Bell Tolls (1,232), One (1,251), Seek & Destroy (1,322), Creeping Death (1,352) and Master of Puppets (1,395) - all songs that were released before Sandman.
"Enter Sandman" was the first song Metallica had written for their 1991 eponymous album, Metallica. Metallica's songwriting at that time was done mainly by rhythm guitarist James