tl:dr
I finished (probably) arranging Requiem for the Gods from Castlevania: Symphony of the Night. Which was insanly hard to arrange because of hard hard it was to transcribe. With blurry voices, and lots of stuff in the background, organs (hard to hear), notes you don't even know if they should be in or are just effects or hard to hear if they're even there, and a lot of details everywhere, and other stuff. Hardest song I've arranged by far (hardest to arrange).
What's the hardest song you've arranged (hardest to transcribe/arrange)?
Man just finished arranging Requiem for the Gods from Castlevania: Symphony of the Night. Or more so "actually finished" it rather than before (like a week or so ago), when I thought I was done with it but... not really was. And omg! That song was fucking crazy. I remember starting with it like a year or 2 ago I think, and was thinking "hmm sounds like a pretty cool song, might sound good on piano. And then started arranging it. And then started thinking "hmmm it's really really hard to actually hear what's going on here", and then later at the organ part "

wtf! cluster here and there. What are those chords!?" .... And then later put it aside (sort of half gave up maybe), thinking that I might arrange it if I feel like it or not. As it seemed so hard to arrange. And I recently took it up during Christmas vacation, and thought I actually made it. And that I made it pretty well. But then I later looked deeper and omg, lol it was just crazy, so hard to hear. I got some help from a midi file, but then later, I think some of the notes were wrong in that file (small errors) so... y.... But to the point. I took it up now and started arranging it and omg, how hard it was. It has everything that is hard to transcribe. Voices and choirs, and organs. And then the voices are so blurry and with vibrato and other effects. And some notes you wonder if they are even supposed to be there or are just some effect. And just a lot of the voices in the background (so y, hard to hear). And a lot of details, like everywhere, lol. So y, insanely hard song. Difficulty level: beyond impossible! Might also be hard as I wanted it to sound well on piano (which was hard), so had to check some things. And it might also be that I've been a bit stressy, with having started school and just wanting to finish this (at the same time). But still, crazy hard song. Hardest song I've ever arranged by far. I was so hard that even with all my tools (equalized, tune up octave song, slow down etc.) I still had a really really hard time hearing it. But y, now it's pretty much done, I think lol.
What's the hardest song you've arranged (hardest to transcribe/arrange)?