I was comparing these two tracks:
. Loyalty by MandoPony+AcousticBrony
.. MKV only at https://tpa.mares.workers.dev/?output=html&id=ZWgvJ-sTG-c
. Pony Waifu
.. https://endchan.net/.media/3af542697f37bd416cf8fb090afa2ff4-videowebm.webm

"Loyalty" is great, and I like all of it; it's about twice as long as "Pony Waifu" (which I also like). I slightly dislike Pony Waifu, mainly the last ~40 seconds; perhaps someone/ML covered it. When I first heard them, I heard Loyalty first.