Yuy, I catched you finishing this on Stream. Well, I gave you my Opinion there, but since I´ve played it myself, my Opinion about it has changed a bit due to some Flaws I noticed in the Gameplay. But well, see about that in my Review.
General Things to be said about the Level: The Level is very colorful, joyful, matches the Song nicely, but uses a bit much Copy + Paste for the Deco at Points which I´ll get more into later. Minor Flaws and bugs in the Gameplay haven´t been unnoticed, but this Level is overall still incredible.
Cube Section:(0:00-0:14)
I like the Grey Shade of everything here, feels soothing. While some Jumps here have a smaller Timing Window than others, the Gameplay here is very enjoyabler regardless and fun because it syncs the Music so well. The Deco here is nice for the most Part but I´ve been missing some more up in the Sky, like you said a lot of People told you already. Which brings uo the Question why you didn´t do it, but I guess that´s up to you. About the Rest, you could have put something else, or some Variation of that small Cog maybe, it´s like the only Thing you even really see when you just play through the Level. The Blocks here look very nice though, to atleast give you that. Overall I guess it´s good.
Ship and UFO Sections:(0:15-0:18)
The Ship Section had a nice Start, but the three Orbs are a bit weird. It feels like you don´t hit them very often, which is why I found the Coin easier than the normal Way, but well. One Thing I noticed when you get the Coin, you often crash into the Spikes at the Ceiling, so I suggest putting some Sort of invisible Platform there to prevent that. The UFO Part was intersting, while short still very fun, but felt like it could have needed just a small tad more Deco. :c
Ball Section:(0:19-0:20)
This was one of my least favourite Parts tbh. The Jumps felt too precise and inconsistent for a Harder Level, plus it´s really nothing else than constant Switching between Pillars. I think you should atleast lower the Saws next to the Pillars so the Window for switching off the Pillar isn´t as small anymore, but otherwise this was fine I guess.
Robot and Wave Sections:(0:21-0:24)
The Robot Section honestly felt too inconsistent as well, because it felt like your Jump had to be nearly perfect to make it, and you often crashed into the Wall, but maybe that´s just me. The Wave wasn´t too special, as it was just some Copy + Pasted Hills, but I have to say atleast the Design of it was different and nice.
Ship and UFO Sections:(0:25-0:30)
These Sections felt pretty painful tbh. The Orb and Portal Combination again left a pretty small Timewindow, and is basically impossible to get your first Time around. Interestingly, I also noticed that you can just entirely skip the Orb, so I guess you should look over that. The UFO was over quickly, but it was hard to gain Height quickly for some Reason. Still nicely done overall, just a bit less Fun that other Parts, because I feel like you were given less Freedom in your Timing, it around Insane 8 Level imo.
Ball Section:(0:31-0:37)
Honestly I didn´t like this Section too much either. I mean, the Design and Deco n´ Stuff is great and everything, but the Gameplay wasn´t as good as I thought it be. It turned out to be mostly mashing, and occasional Orb Timing, but it wasn´t that fun imo. Also it went pretty quickly, and sometimes you barely had any Time to react. Well, aside from this it was still great though.
Wave and Ship Sections:(0:38-0:41)
These Parts kinda gave the Level a cavy Look, if that´s even a Word. Imo both Parts were lacking a little Deco again, but nothing major I guess. The Gameplay here, however, was actually fun again because you didn´t really feel like, caged anymore, and you had some Freesom with your Inputs. Otherwise, nothing too special to say here.
UFO and Cube Sections:(0:42-0:45)
The UFO was actually fun again, because there was nothing strict to follow, and the Atmosphere was very nice! The Cube, well it was basically Auto, but for that I feel like you could have placed some more Deco, or a little Effect maybe? I feel like this Part is lacking something making it special. This also may not have been the best Place in the World for a Coin, but well.
Several Sections:(0:46-0:52)
You know, the Wave honestly wasn´t much more than a few Copy + Pasted Sloped again, and wasn´t really that fun either. The other Parts however, felt very dynamic, fast-paced and fun. Also because it very nicely synced with the Music again, but one Thing. The Deco. It just felt like too much Copy + Paste again. You could maybe use a different small Object or something, or alter the Shade of Color used, the Degree of Rotation, but it just was nearly the same Thing 10000 Times. :c
Some more Sections:(0:53-0:57)
There is not a lot to say here, I guess it was pretty fun, but it really also felt like the same Thing over and over again, and it kinda got boring after a While. Still, it looks and plays very good, and it´s fun, no too major Flaws here.
Final Sections:(0:58-End)
The last Ship here felt strange, as it kinda mixed up the Deco again, and didn´t really follow the Theme of the Level as much. Also, there are like 100000 Swirls Copy + Pasted again, but I don´t need to mention that, right? What I missed here especially was something pulsing to the Beat, and something going along with the Music better. Maybe that´s just me though, because I´m a little tired right now.
EDIT: One Thing I also forgot to mention is that the Level quite lags, atleast for me. Maybe a LDM wouldn´t be bad.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gameplay: 9.2/10 A few Bugs here and there, pretty strict Timing Windows generally, but overall still fun I guess.
Music Sync: 9.7/10 I feel like you could have done more with the Objects and Deco and Stuff, I missed some Flashes like in the first Part. Was still very nice though.
Design and Deco: 9.6/10 Eh, a little too much Copy + Paste here and there, but for an overdecorated Style, I guess it´s pretty good.
Other Things: 9.5/10 Besides the Level obviously looking absolutely glorious, there were some Flaws that I mentioned like everywhere above, which decrease from the overall Score a bit, but this was really great, you can´t deny it.
Originality: x1.16 Some Aspects of the Level have been seen before, but honestly you didn´t really notice. The Level was really fresh and new, and I like it a lot.
Score: 39.536/48 or 9.884/12 , 
6 or 7 
. While at first I was pretty sure this was going to legendary, I kinda changed my Mind a bit when this came out. Right now I would put it to Low-End Legendary-High-End Feature-Worthy, but we´ll see what the next Judge says. I want to wait for more Opinios before moving. Also, here you have your promised Book. ( ๑‾̀◡‾́)σ»
