You can find various "paper" arrangements (sheet music) for this theme through several platforms: Khazad-dûm - song and lyrics by Bear McCreary | Spotify
The theme from The Lord of the Rings: The Rings of Power was composed by Bear McCreary . The piece is noted for its "mechanical ostinato" featuring low strings, anvils, and deep choral vocals in the Dwarven language, Khuzdul, designed to represent the city at its peak of industrial power. Available Sheet Music You can find various "paper" arrangements (sheet music)