To make a short story long:
Many years ago in another life I came upon a Nana Mouskouri rendition of Ave Maria on one of my Vinyl LP's.
The mp3 made from it made me happy for decades! I neither knew nor cared what key it was in or any of that.
Much later I decided that I wanted to learn it and had some help in making a midi file to be the basis for a backing track. Didn't try it too often because I thought it was NOT an easy piece. Never even noticed that the midi was in A-major (I had always thought it was in the original key).
I got curious and fed the original mp3 to a web tool and IT says it's in E-major.
Some well meaning soul on the net told me that the Mouskouri version was in Ab-major so I went looking.
@ these links I found 3 61bpm Mouskouri versions (presumably all Gounod and all the same number of bars) in Ab-major but not two of them show the same chords (when I click on "overview")!
https://chordify.net/chords/nana-mousko ... a-2-chords
https://chordify.net/chords/nana-mousko ... a-5-chords
https://chordify.net/chords/nana-mousko ... Q--LzoIEbM
Now I'm so screwed up I don't even know what question to ask. I like the original, I think I want to learn it in Ab, but where are the chords for it?
Addendum:
A little more searching coughed up my original (so called #1 version),
the same key-finder spit THIS out as not E but Eb! The strong base
came out very well in my midi file (4/4 & 64 bpm)
https://www.youtube.com/watch?v=ckQC7_ywFb4
The so called #2 version is also Eb
https://www.youtube.com/watch?v=afc6v2bozEc
Addendum2:
The #1 (ckQC7_ywFb4) version IS what I want, but every key-finding
utility gives it a different key: A, Am, B ... The midi file has no key sig,
so here's the lead staff from it with accidentals, I should be able to nail the
key from the lead track, no? I mean any key change WOULD change the lead?
This is what I transposed to Ab in Rosegarden and it ended up not sounding
too good. Meanwhile I figured out that the reason I did not like the original
one is that it was a rushed up production. I made a new recording using this
midi and it sounds not bad, whatever key it's in.