Neon Genesis Evangelion Gregorian-Like/Byzantine-Like OST????

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Hi guys, how are you?



In 2002 I've heard an OST music which my friend told me that it's Neon Genesis Evangelion's, and that music sounded like a gregorian or byzantine ecclesiastical chant,I think that it was without instruments, but I'm not sure, and I think that there was only man/men voice(s), not woman/women's, but again I'm not sure, so the two questions are:

1. Is there a Neon Genesis Evangelion's music sounding like this or no?
2. If yes, what is its title?


Thanks a lot guys



I know only song "Ameno" performed by ERA. But I'm not sure if it is your track
It's definitely not, but I really enjoyed hearing this song "Ameno", I spent a great experience hearing it, so thank you so much

Listen to whole soundtrack for the show and the movie anyway.
I will definitely do when I'll have time, just wanted to save time by seeing if anyone can help