I wrote a thing! · 4:33pm Oct 10th, 2020
Not ponies though, so I can't post it here.
It's actually been up for almost a month, but I took so long to mention it here because I have no idea how to self-promote.
Anyway, if you like music-powered magical girls, giant monsters, thwarted plots, and out-of-context problems, check out The Power of Song on AO3 and SpaceBattles