In 2014 or so, an user posted a thread in which he uploaded a selection of scans from a rare sheet music publication for Evangelion.
That sheet music book is called "Evangelion Piano Forte #1". It currently goes for $400 used and is out of print.
This is some of the best arrangements of Eva music. However, the user didn't post the full book in scans and left an mega link. However that link is now 404.
I am curious if any anons have this book or pdf/upload of the full scans. It's worth preserving and fuck the Ebay Jews.
Next we have a piano arrangement of Komm Susser Todd.
Keep in mind that this doesn't cover the vocal performance and is expected to be duet at minimum with a vocalist. In recordings of this, they also keep the electronic keyboard backing.
IMO it's not very interesting but I am including it for completeness.