2012 video not in TPA - "(PMV) Applejack - I'm Yours [1080p HD]" (small/medium-size channel):
https://invidious.incogniweb.net/watch?v=175uhoGIJ2Y

I didn't see any MLP thing related to the 1963 film "Bye Bye Birdie"; title song:
https://invidious.incogniweb.net/watch?v=1t3cBTb3xPc
Similarities to MLP:
- Girly
- Saccharine sweet
- Happy/upbeat music
- Retro/older (G1 spin on it if you want)
- No reference to species ("hands", "pony")

"Better" or "more sensible" than some things which have been "ponified". Also, I could imagine a simple animation to go with it if someone wanted to try their hand at animating.

Speaking of music, this is one of the best sets from this specific radio program - "Sub Focus Essential Mix 2023 - BBC Radio 1" https://invidious.incogniweb.net/watch?v=Mgc5UNDaySQ ; for the most part: I like it and think it's a banger.

From a torrent, so maybe won't be very online - "My Little Pony Vänskap Är Magisk":