Metallica’s “The Call of Ktulu” is like an eerie soundtrack to something ancient and terrifying lurking just beneath the surface. The whole song feels like a slow, deliberate wake-up call for an otherworldly monster straight out of Lovecraft’s nightmares. Without any lyrics, it’s the music itself that tells the story—starting off quiet and haunting, then gradually building layers of tension like the air getting heavier before a storm, pulling you into an unsettling experience of growing dread.

What’s cool is how each instrument adds its own flavor to that feeling. Cliff Burton’s bass rumbles low and deep, almost like the sea itself is grumbling, while the guitars slowly creep in with sharp, sometimes almost claw-like riffs. Lars Ulrich’s drums keep everything feeling urgent without rushing it, like the heartbeat of something big and unstoppable. It’s not just playing metal riffs; it’s like they’re painting a picture of a cosmic beast stirring from an ancient sleep, and you can’t look away even though you’re scared.

Interestingly, “The Call of Ktulu” was initially started by Dave Mustaine before his dismissal from Metallica, but it ultimately became a collaborative piece among all four original band members. Released as part of their 1984 album Ride the Lightning, the song reached new heights when performed with the San Francisco Symphony Orchestra on the live album S&M. The legendary composer Michael Kamen arranged and conducted the orchestral parts, adding sweeping strings and powerful brass that turned the track into an apocalyptic ritual of sound, blending Metallica’s heavy riffs with symphonic grandeur and amplifying the song’s cosmic horror vibe to an unforgettable level.