Sources:
ogg+cover: https://lunaticks.bandcamp.com/track/socks
background: https://derpibooru.org/1297801
A video exists but I didn't use it:
A clean version of the cover file can be found here:
https://www.deviantart.com/darkflame75/art/Sparkly-sparkly-socks-on-ponies-with-sparkly-manes-469840608
Download: https://drive.google.com/file/d/1J2wvCPRlDzuQoh8PEnpylYGx8ytJuRWr/view?usp=sharing