tl;dr
Hisoutensoku
Did you see that Shadow?
Memory of Forgathering Dream
The Legendary Titan
Our Hisou Tensoku
The Scenery of Living Dolls
The Eternal Steam Engine
Faith Is for the Transient People
Beloved Tomboyish Girl
Shanghai Teahouse ~ Chinese Tea
Solar Sect of Mystic Wisdom ~ Nuclear Fusion
Tomorrow Will Be Special, Yesterday Was Not
Dichromatic Lotus Butterfly ~ Ancients
Love-Colored Magic
The Grimoire of Alice
Voile, the Magic Library
Mystic Oriental Love Consultaion
Unknown X ~ Unfound Adventure
X, the Floating Objects in the Sky
A Huge Shadow and a Tiny Conclusion
Undefined Fantastic Object
A Shadow in the Blue Sky
At the End of Spring
A Tiny, Tiny, Clever Commander
The Sealed Cloud Route
Beware the Umbrella Left There Forever
Sky Ruin
The Traditional Old Man and the Stylish Girl
Interdimensional Voyage of a Ghostly Passenger Ship
Captain Murasa
Rural Makai City Esoteria
The Tiger-Patterned Bishamonten
Fires of Hokkai
Emotional Skyscraper ~ Cosmic Mind
UFO Romance in the Night Sky
Heian Alien
Youkai Temple
Returning Home From the Sky ~ Sky Dream
Player's Score
Subterranean Animism
https://touhou.wikia.com/wiki/Subterranean_Animism:_Music
Scarlet Weather Rhapsody
https://touhou.wikia.com/wiki/Scarlet_Weather_Rhapsody:_Music
Mountain of Faith
https://touhou.wikia.com/wiki/Mountain_of_Faith:_Music
Shoot the Bullet
https://touhou.wikia.com/wiki/Shoot_the_Bullet:_Music
Phantasmagoria of Flower View
https://touhou.wikia.com/wiki/Phantasmagoria_of_Flower_View:_Music
Immaterial and Missing Power
https://touhou.wikia.com/wiki/Immaterial_and_Missing_Power:_Music
Imperishable Night
https://touhou.wikia.com/wiki/Imperishable_Night:_Music
Perfect Cherry Blossom
https://touhou.wikia.com/wiki/Perfect_Cherry_Blossom:_Music
Embodiment of Scarlet Devil
https://touhou.wikia.com/wiki/Embodiment_of_Scarlet_Devil:_Music
Mystic Square
https://touhou.wikia.com/wiki/Mystic_Square:_Music
Lotus Land Story
https://touhou.wikia.com/wiki/Lotus_Land_Story:_Music
Phantasmagoria of Dim Dream
https://touhou.wikia.com/wiki/Phantasmagoria_of_Dim.Dream:_Music
Story of Eastern Wonderland
https://touhou.wikia.com/wiki/Story_of_Eastern_Wonderland:_Music
Highly Responsive to Prayers
https://touhou.wikia.com/wiki/Highly_Responsive_to_Prayers:_Music
Shuusou Gyoku
https://touhou.wikia.com/wiki/Shuusou_Gyoku:_Music
Kioh Gyoku
https://touhou.wikia.com/wiki/Kioh_Gyoku:_Music
Dolls in Pseudo Paradise
https://touhou.wikia.com/wiki/Dolls_in_Pseudo_Paradise
Ghostly Field Club
https://touhou.wikia.com/wiki/Ghostly_Field_Club
Changeability of Strange Dream
https://touhou.wikia.com/wiki/Changeability_of_Strange_Dream
Retrospective 53 Minutes
https://touhou.wikia.com/wiki/Retrospective_53_minutes
Magical Astronomy
https://touhou.wikia.com/wiki/Magical_Astronomy
Bohemian Archive in Japanese Red
https://touhou.wikia.com/wiki/Bohemian_Archive_in_Japanese_Red_(CD)
Perfect Memento in Strict Sense
https://touhou.wikia.com/wiki/Perfect_Memento_in_Strict_Sense_(CD)
Eastern and Little Nature Deity / Strange and Bright Nature Deity
Sunny Rutile Flection
I Can't Sleep Because This Is Night
Fairy Being Brilliant
Sunny Milk's Scarlet Mist Incident
A Land Resplendent With Nature's Beauty
Star Voyage 2008
The Refrain of the Lovely Great War
The Fairy's Adventurous Tale
Two Worlds
Silent Sinner in Blue
https://touhou.wikia.com/wiki/Silent_Sinner_in_Blue_(CD)
The Grimoire of Marisa
https://touhou.wikia.com/wiki/The_Grimoire_of_Marisa_(CD)
Akyu's Untouched Score
Theme of Eastern Story
Uwabami Breakers
A Drunkard's Lemuria
神魔討綺伝 ~ Magus in Mystic Geometries (D.N.A. Softwares game ZUN composed a track for)
AN ORDEAL FROM GOD
東方幻想麻雀 (see above)
キュアリアス上海古牌
AN ORDEAL FROM GOD
Toruteru Magic (see above?)
Witch of Love Potion
Magical and Hopeless
Sacred Battle
Original / Other
https://www16.big.or.jp/~zun/html/music_old.html
宵闇の魔術師
Magic of Life
Plastic Space
Frontal Attack
Inventive City
夢幻回廊
蓬莱幻想 ~ far East
夜の鳩山を飛ぶ
妖々跋扈 ~ Speed Fox!