If you’re into heavy music with a dark, spooky vibe, Metallica’s “The Thing That Should Not Be” is a must-listen. The song draws heavy inspiration from H.P. Lovecraft’s stories about ancient sea monsters and forbidden gods — you can feel that eerie cosmic horror flowing through the lyrics and music. Unlike their faster, thrashy songs, this one’s slower and heavier, building this oppressive, almost underwater atmosphere that really pulls you into a different world. The sounds perfectly suit a cosmic horror soundtrack, like you’re hearing something ancient waking up beneath the surface.

Every member of Metallica brings something special here. James Hetfield’s vocals nail that storytelling vibe, like he’s warning you about unspeakable horrors. Kirk Hammett’s guitar solo adds a weird, haunting layer with its echoing bends and wild tone, totally fitting the Lovecraftian theme. Cliff Burton’s bass work gives the song a thick, gnarly depth that makes everything feel huge and otherworldly, while Lars Ulrich’s steady drumming drives the mood without rushing it. Together, they craft this dense, crushing atmosphere that feels like it could be the soundtrack to a cosmic nightmare.

If you want to hear the song take on an epic new dimension, check out the S&M version with the San Francisco Symphony. The orchestra adds massive, cinematic power, turning the track into a full-on cosmic horror soundtrack. The strings and brass layer in this grand, haunting sound that makes the whole thing feel even more apocalyptic and intense. It’s like Metallica took their already heavy and spooky song and gave it the kind of scale and depth that only a symphony can provide. Definitely worth a listen if you want to experience cosmic horror in both metal and orchestral form.

The Thing That Should Not Be

Messenger of fear in sight
Dark deception kills the light
Hybrid children watch the sea
Pray for father, roaming free

Fearless wretch
Insanity
He watches
Lurking beneath the sea

Great old one
Forbidden site
He searches
Hunter of the shadows is rising

Immortal
In madness you dwell

Crawling chaos, underground
Cult has summoned, twisted sound
Out from ruins once possessed
Fallen city, living death

Fearless wretch
Insanity
He watches
Lurking beneath the sea

Timeless sleep
Has been upset
He awakens
Hunter of the shadows is rising

Immortal
In madness you dwell

[Guitar solo]

Not dead which eternal lie
Stranger eons death may die
Drain you of your sanity
Face the thing that should not be

Fearless wretch
Insanity
He watches
Lurking beneath the sea

Great old one
Forbidden site
He searches
Hunter of the shadows is rising

Immortal
In madness you dwell