My throat feels like it swallowed a burning coal right now... but my brain, it lives! Have you guys and/or gals read about "The Bloop?" It's this weird audio phenomenon that took place deep within the ocean depths back in 1997. Basically, nobody knows what animal could've been big enough to make this ridiculously epic noise that was heard from thousands of miles away.
ANSWER: It was Cthulhu.
Is this music-related? Well, that depends on how you categorize your sounds, I suppose.