Extremely Disturbing Elder Scrolls: Arena Glitch (Horror Video)

Hey guys.
I recently decided to start playing Arena again because I've done pretty much all there is to do in the rest of the games, so when I noticed the sky was black I got excited I might have discovered something new and so I started recording. I did NOT expect all of THAT to happen. Does anyone know what might have caused this? Nothing like this has ever happened to me before. Does my computer have a virus or something? There's no way this is just a random glitch.
I only edited a small portion of the video where nothing happens. I played through the entire video multiple times, frame-by-frame to make sure nothing strange was hidden in the parts I edited. The only things I added were I sped up some gameplay of me fighting things and I added the text at the start.
I haven't been able to stop thinking about this. I haven't gotten a good nights sleep in like a week. I don't think I will until someone can explain what the hell is going on here.
Thanks for watching.

[@user-hk7xv6it5t]

That's wild. Maybe they had an easter egg for Morrowind somehow? But oblivion too? That's weird.

[@freak-igN8T]

My name is
Shake zula the mic rule the old schoola, you wanna trip, ill bring it to ya
Frylock and im on top rock ya like a cop, meatwad you up next with yo knock-knock
Meatwad make the money see, meatwad get the honeys g
Drivin in my car, livin like a star
Ice on my fingers and my toes and in a Taurus
Uh check check it, yeah
Cause we are the aqua teen make the homies say ho make the girlies wanna scream
Cause we are the aqua teens make the homies say ho make the girlies wanna scream

[@freak-igN8T]

!!!!ILOVEIMPGALL!!!!

[@RisaKazura]

Eeeeh.... Next time use OG Daggerfall. Would make this more believable... And then, in the middle of gameplay switch to DF Unity, making it look like the game burped out a graphics update. :p