From which Metallica album does the song, used by Niels de Ruiter as walk-on music, come?
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.
On (Gary Glitter album) On is a 2001 album by English rock singer Gary Glitter, and his last studio album as of 2017. It contains new recordings of songs that were only ever performed live during Glitter's last concerts in 1996 and 1997. The album was released in 2001, two years after Glitter's UK conviction for possession of child pornography. It was available only for a short time through Glitter's website, and sold a mere 5,000 copies worldwide. After his conviction most major retailers had refused to stock his music.