Another Zelda: Breath of the Wild fact I never knew: The Divine Beasts have SOS morse code in their themes - Destructoid

Although it was discovered back in 2017 by several players, I never really caught on to the fact that the theme song for each Divine Beast contains an "SOS" morse code signal.

This caught my eye thanks to a ResetEra post, which pretty much blew my mind.

I always felt like something was going on with the themes there, but never put two and two together.