Every single time I hear a track by you, my hot take is: "Well, that was different." You don't like being pinned down to just one genre, and I respect the flex. From the very beginning of the track to that final quirky touch, I was here for it. This might be a Weird thing to say, but to me this sounds a bit like Al Yankovic taking on the Heavy Metal genre.
You've done a really good job with the different styles of voice you applied to various parts of the song, and I think there's just enough of a Rock vibe to the regular vocals to make it work. I've got zero complaints with your instrumental mix, and am a big fan of those moments where you strip it all down for the vocal breaks. There's a ton of variation across these four minutes, and each section really feels like it builds upon the previous one.
There are several moments where it sounds like there's some disharmony between the vocal harmonies and the instrumental mix. They come and go quickly, and considering the genre it may be intended, but those moments still sound off to my listening ear.
Suffice to say, I have thoroughly enjoyed my peek Behind the Curtain. You rock pretty hard, man.
Score: 8.4/10