that whole channel is a goldmine. i found it while diving down the rabbit hole that is bemani music videos. (basically, the clips that play in the background of beatmania/ddr-esque games) which is also how i found HADES! that side of youtube is a treat. (lots of gore, loud noises, and flashing lights in the last one)
also, spooky season means it's time for the gorey musical with aesthetics that have been living rent-free in my brain since i discovered it at age 12:
and also(x2), anything by will wood: