She is musically inclined and she popped on a record I had recently gifted her of one of her favorite bands. She was in marching band her entire high school experience as well. She always finds stuff like this. She recognizes when it’s a different recording or not the “proper version” from her childhood. It all sounds fine to me! As a visual person, the finer understandings of music might as well be magic to me.

You can try with my example video above! Listen to the first couple seconds of the song on my recording (skip to 0:08):

https://twitter.com/OKatBest/status/1795453042994680148

Then listen to the original:

https://www.youtube.com/watch?v=9NplyW8TF18

Maybe it's just me, but as soon as the guitar starts I can tell it's way too high pitched.

If it’s a song you know well it’s certainly possible. It just sounds wrong. I once pegged a friends turntable as well sharp (and it was) in just a few seconds.

When US (NTSC) shows are aired in Europe (PAL), the framerate difference necessitates a small speed-up. It's barely noticeable, except when music is playing, at which point it is very, very noticeable. Yes, it's a little higher pitched, but it just feels wrong and is immediately noticeable. I think it's about 3% speed up, which is exactly what's being described here.

I believe with music it's much easier to notice that something is sped up. I'm watching videos, listening to podcasts all the time sped up, now don't even notice it, but with music, even a 10% speed up is extremely noticeable.