This is something I've been meaning to finish for a while. I was interested in hearing what Sweetie Belle's music sounded like, so I reprinted it in Finale... mostly. It's completely impractical as a piece of music and half of it is just simply turned 180 degrees and redrawn over the original. For the image I did exactly that as well and for the music I just layered a retrograde version of the original onto the music. Despite these "shortcuts" I tried to realize the written notes as much as possible to see what sort of music Sweetie Belle finds reasonable to sing along with.

It's, uh... interesting. Here's a link to the video: The score doesn't prescribe a specific instrument so I just used generic piano.
Very complex sheet music S6E4

Original score

FANMADE Sweetie Belle's Music

Homemade version