This is really interesting. I'm in love with the grove; the swung rhythm is really well done.
The 8-bit plugins were used to great effect and limiting your voices really adds to the authenticity.
I also really like the panning at around 50 seconds in. It was a nice contrast to the previous section and helped add to the track's movement.
The melody and trills really helped give it a Halloween vibe and the timbre of the marimba in the cover version really adds to the skeleton aesthetic.
I feel so called out in your description though bc I used orchestra lol 😂.
Overall really good work!