So I tried to do more visual-y stuff and found an amazing tool to vizualize MIDI files: http://www.musanim.com/player/
The arrangement was done by Napstabot EX, listen to it here: https://musescore.com/user/1030256/scores/1971636 I added my own touch to it :)
Also, if you haven't, go play Undertale! http://undertale.com/

The original song is made by Toby Fox, and I have to say I dig that soundtrack so much *rolls in it*