Jukebox Friday Night for 25 July 2025 has the theme "Heavy Metal Hard Rock", in honour of Ozzy Osbourne, and for music with metallic themes or hard rocks (diamonds!).
You can argue that this band falls into the "Prog" category, but this track, this track my friends, is metal:
King Crimson, "21st Century Schizoid Man" (including "Mirrors") " (1969)
Greg Lake never sounded more sinister, singing over his heavy bass:
"Blood rack barbed wire
Politicians' funeral pyre
Innocents raped with napalm fire
Twenty first century schizoid man …"