{{MusicArticle
| titlejp     =東方幻想界 -永夜抄の音-
| titlejprom  =Touhou Gensoukai -Eiyashou no Oto-
| titleen     = Touhou Fantasy World -Sound of Eternal Night Vignette-
| group       ={{lang|ja|狐の工作室}}
| image       =KNTH-0005.jpg
| released    =2011-03-13
| tracks      =13
| website     =[http://yuki-factory.main.jp/event/knth-0005.html Link]
| length      =44:00
| catalogno   =KNTH-0005
| groupCat    =foxfactory
| convention  =Reitaisai 8
| banner      =KNTH-0005 banner.jpg
| banner_res  =x60
| arranger    ={{水橋ゆっきー}}
| illustrator ={{lang|ja|甘党}}
| designer    ={{lang|ja|うき}}

| description =It features instrumental arrangements of themes from ''[[Imperishable Night]]''.

| tracklist   =
* {{Track|01|{{lang|ja|深淵の幻想故郷}}|02:38}}
** original title: {{lang|ja|懐かしき東方の血　～}} Old World
** source: {{IN}}
* {{Track|02|{{lang|ja|歪な月}}|02:32}}
** original title: {{lang|ja|永夜抄　～}} Eastern Night
** source: {{IN}}
* {{Track|03|{{lang|ja|月明の異変飛行}}|03:13}}
** ''Unusual Moonlit Flight''
** original title: {{lang|ja|幻視の夜　～}} Ghostly Eyes
** source: {{IN}}
* {{Track|04|{{lang|ja|蟲ノ報セ}}|02:15}}
** original title: {{lang|ja|蠢々秋月　～}} Mooned Insect
** source: {{IN}}
* {{Track|05|{{lang|ja|懐古の知識と歴史}}|04:25}}
** ''Nostalgic Knowledge and History''
** original title: {{lang|ja|懐かしき東方の血　～}} Old World
** source: {{IN}}
* {{Track|06|{{lang|ja|待ち人は歴史の中に…}}|03:06}}
** original title: {{lang|ja|プレインエイジア}}
** source: {{IN}}
* {{Track|07|{{lang|ja|スエイグムーン}}|03:57}}
** original title: {{lang|ja|シンデレラケージ　～}} Kagome-Kagome
** source: {{IN}}
* {{Track|08|{{lang|ja|水面の逆月路}}|02:36}}
** original title: {{lang|ja|ヴォヤージュ1969}}
** source: {{IN}}
* {{Track|09|{{lang|ja|千年幻想郷}}|02:43}}
** original title: {{lang|ja|千年幻想郷　～}} History of the Moon
** source: {{IN}}
* {{Track|10|{{lang|ja|姫君の扇}}|04:01}}
** ''Princess's Fan''
** original title: {{lang|ja|竹取飛翔　～}} Lunatic Princess
** source: {{IN}}
* {{Track|11|{{lang|ja|永久少女の散歩}}|03:47}}
** original title: {{lang|ja|月まで届け、不死の煙}}
** source: {{IN}}
* {{Track|12|{{lang|ja|星空には恋色の魔法を}}|05:30}}
** original title: {{lang|ja|恋色マスタースパーク}}
** source: {{IN}}
* {{Track|13|{{lang|ja|変わらぬ月夜}}|03:16}}
** original title: Eternal Dream {{lang|ja|～ 幽玄の槭樹}}
** source: {{IN}}
}}