All of the Len'en 4 themes (not counting credits, ending and title). This game one of the best OSTs i've heard for now, specially Mitori and Chouki's. But most of the OST is also pretty awesome. Decided to post this here since no one has done it yet.
None of this is mine, Len'en is made by JynX, they're awesome making games and their OSTs (BPoHC Golden Chapter will be a thing so...!!!)

Len'en 4 BPoHC Fujiwara No Iyozane's Theme - Waves And Wind Swaying The Spirits ~ Not Steady Body

Len'en 4 BPoHC Adagumo No Yaorochi's Theme - Mowed - Down Relationship

Len'en 4 BPoHC Devanagara Theme - The Utopia Of Steel And Oil

東方幕華祭 春雪篇 ～ Fantastic Danmaku Festival Part II

Touhou FDF Part II - Iron Curtain Between Human and Youkais

Touhou FDF Part II - Paradise Solemn

Carrefour Stage Boss OST (Yachimata no Akiwaza's Theme) of 東方潮聖書

【東方潮聖書】Sapphire Panlogism OST - Her Millennium Candy

Juicy rhythm with spicy hips. A fruit dance gone wild. More music at www.caricatunes.com.

Mango Tango

An extreme fight..

This music is thought as a soundtrack for a D&S session; it can be used by everyone since it's on CC licence: feel free to use it and let me know you opinion!

Devilish Struggle - Battle Theme

Mehailo Verbitski (arr. by Paulo Galvão) - State Anthem of Ukraine - "Shche ne vmerla Ukraina" - "Ukraine Has Not Yet Perished" - 1863
Conductor - Neil Thomson
Orquestra Sinfônica do Estado de São Paulo
Live recording - Sala São Paulo - São Paulo - SP - Brazil - March 12, 2022
Illusstration - Kostiantyn Liberov - Aerial View Of Toretsk, Ukraine 


Mehailo Verbitski (arr. by Paulo Galvão) - State Anthem of Ukraine - São Paulo - 2025

Edit: Mystery solved! ❤ Thank you, Skeleton.

Unfortunately, I have no idea who created this remix. I found the mp3 on my computer and I recall downloading it from a Youtube video, but the video has since been taken down.

If anyone has any idea what circle made this remix, please let me know so I can give them credit. It'll also help me sleep at night since I've been dying to know for years lmao.

Touhou FDF Part II - Iron Curtain Between Human and Youkais

Vaurunelle