{{MusicArticle
| titlejp     = 
| titlejprom  = 
| titleen     = Touhou Engo ~ Changeablility of Hidden Masquerade
| group       = [[Hidden Masquerade]]
| groupCat    = Hidden Masquerade
| released    = 2015-10-05
| convention  = 
| tracks      = 12
| length      = 43:57
| catalogno   = N/A
| genre       = {{Genre|Instrumental}}, {{Genre|Electronic}}
| website     = 
| digital     = [https://hiddenmasquerade.bandcamp.com/album/touhou-engo-changeablility-of-hidden-masquerade Bandcamp]
| image       = Changeablility_of_Hidden_Masquerade.jpg
| banner      = 
| banner_res  = 
| caption     = Portrayed: [[Hata no Kokoro]]
| arranger    = Hidden Masquerade
| lyricist    = 
| vocalist    = 
| producer    = 
| illustrator = 
| designer    = 
| masterer    = 
| other_staff = 
| description = It features instrumental arrangements of themes from ''[[Phantasmagoria of Dim. Dream]]'', ''[[Embodiment of Scarlet Devil]]'', ''[[Perfect Cherry Blossom]]'', ''[[Imperishable Night]]'', ''[[Phantasmagoria of Flower View]]'', ''[[Subterranean Animism]]'', ''[[Undefined Fantastic Object]]'', ''[[Ten Desires]]'' and ''[[Hopeless Masquerade]]'' plus an original track.
| tracklist   =

* {{Track|01|Hidden Masquerade|04:27}}
** arrangement: Hidden Masquerade
** original track

* {{Track|02|The Lost Emotion|03:52}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|亡失のエモーション}}
** source: {{HM}}

* {{Track|03|The Centennial Festival for Magical Girls|02:27}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|魔法少女達の百年祭}}
** source: {{EoSD}}

* {{Track|04|Shoutoku Legend ~ True Administrator|02:52}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|聖徳伝説　～}} True Administrator
** source: {{TD}}

* {{Track|05|Flowering Night|03:31}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|フラワリングナイト}}
** source: {{PoFV}}

* {{Track|06|Phantom Ensemble|02:19}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|幽霊楽団　～}} Phantom Ensemble
** source: {{PCB}}

* {{Track|07|Strawberry Crisis!!|03:07}}
** arrangement: Hidden Masquerade
** original title: Strawberry Crisis!!
** source: {{PoDD}}

* {{Track|08|Nuclear Fusion|03:56}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|霊知の太陽信仰　～}} Nuclear Fusion
** source: {{SA}}

* {{Track|09|Emotional Skyscraper ~ Cosmic Mind|04:52}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|感情の摩天楼　～}} Cosmic Mind
** source: {{UFO}}

* {{Track|10|Maiden's Capriccio ~ Dream Battle|03:17}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|少女綺想曲　～}} Dream Battle
** source: {{IN}}

* {{Track|11|Bad Apple!! ~ Alstroemeria Version Mix|03:49}}
** arrangement: Hidden Masquerade
** original title: Bad Apple!!
** source: {{LLS}}

* {{Track|12|FOREVER DUSK|05:22}}
** arrangement: Hidden Masquerade
** original title: {{lang|ja|妖魔夜行}}
** source: {{EoSD}}

}}