my mom was a coloratura (opera singer, high end of soprano)

Here's a piece she used to sing...(I love Maria Callas...)

Maria Callas - Puccini - O mio babbino caro

Well, you have to listen to some Pavarotti.

here he is, perfectly in voice, back in 1978,

Luciano Pavarotti - Ave Maria, Notre Dame Cathedral, Montreal 1978

I've always liked the Vienna Boys Choir...such pure voices...and, for me, just about the embodiment of perfection:

Christmas Songs

And this one, in German, but I just love the rendition. I do speak a little German, my family was from Leipzig, so maybe I am biased towards them...I don't know...

Silent Night (in German)

nice rendition of the Bolero

Wiener Philharmoniker - Maurice Ravel - Bolero - Regente Gustavo

and, last one...

Deutsche Grammophon was a great record label

They have a You Tube Channel

I think you will find many wonderful things there...
https://www.youtube.com/@deutschegrammophon