Mercyful Fate's "9" was released in 1999 and is their ninth studio album. This Danish heavy metal band, led by the enigmatic King Diamond, continued to evolve its distinctive style with this album. "9" features a blend of traditional heavy metal elements and the band's characteristic occult and horror themes. King Diamond's unique vocal style, characterized by his falsetto and storytelling prowess, remains a central element of the album. Highlights from "9" include "Last Rites," "Burn in Hell," and "Kiss the Demon," which maintain the band's focus on dark and macabre subject matter, a hallmark of Mercyful Fate's music. The album stands as a testament to Mercyful Fate's enduring influence on the heavy metal genre and their commitment to delivering a unique and captivating musical experience. "9" testifies to the band's dedication to their distinctive style and their continued relevance in the world of heavy metal.