MY DUDES, as one of the biggest ZUN music nerd you'll ever encounter, I'm going to share my thoughts on some of the tracks here!
Disphora's track sounds almost like a possible evolution of ZUN's style. ZUN's style has been evolving since 1986 since he started, and that's normal. But he often stays in one style for 1 or 2 years before changing it a bit. Here it sounds almost like something that could have happened after Touhou 19 if Taboo Japan Disentanglement hadn't happened instead: the elementic drum kit but with strings again (he hasn't used them in a GOOD while) and way more delicate composing. Big fan, and one of my favorite tracks here!
Vert's boss track is... yeah you just know from listening to it that Vert knows a lot about making ZUN style. It sounds very boss 1 too! I mean... Just listen to Touhou 18's first boss theme. It's perfectly in style! My only complain (and it's a very small one), would be that the panning on elementic is b i g but that's not a huge deal lol.
CraftMango has made quite a big amount of progress compared to the earlier tracks shared on discord. The part without the drums (but before the claps start again) is legit. The composition on display has motifs, is logical and memorable. The key changes are also very elegant. To me, you should now start working on getting better instruments! It'll help a lot with mixing too!
Vert's stage song is INSANE AAAAAAA it's just so good what the hell. To me it's one of the highlights of the collab clearly. It'll literally help me wait for ZUN's next album's announcement which SHOULD happen on July 22nd or 23rd if he is consistent with the other times he released albums. Yeah the track is THAT good.
I shall also give credit where credit is due to PixxlMan's track. The instruments are on point, but it's an earlier era of ZUN's music. Thank god we got an earlier style song because without this track it wouldn't have happened. Justice to the Gator Kit lmao.
YoannBB's track is alright ig
JinZ, track remind me of Okina's first theme due to its structure lol, but actually it mostly makes me nostalgic as when I started composing I tried making some Touhou-likd songs. But I mainly used the Touhou soundfont. This track uses it a lot too, hence why it made me feel nostalgic haha
Lastly, Monotsugoi's track. It does not belong as an ending track clearly, but that wasn't their decision and a track had to be chosen lol, at the end of the day. But GAH DAMN THIS ONE TOO is just insane. First of all going for the LOLK style is bonkers, I see very few songs in that style. But the bass is also just so slappy, it's extremely catchy. Seriously, you and Vert have collabed before and it's clear that you 2 know Touhou's music a lot. I don't know how you 2 came to participate in that collab but we got hard carried. Props to you!