{{MusicArticle
| titlejp     = 
| titlejprom  = 
| titleen     = Prologue
| group       = [[Einherjar Records]]
| groupCat    = Einherjar Records
| released    = 2009-08-15
| convention  = Comiket 76
| tracks      = 9
| length      = 50:05
| catalogno   = ERCD-0001
| genre       = {{Genre|Instrumental}}, {{Genre|Electronic}}, {{Genre|Techno}}, {{Genre|Trance}}, {{Genre|Piano}}
| website     = [https://web.archive.org/web/20141219195110/http://www.einherjarrecords.net/ERCD-0001/ Archived Website]
| digital     = 
| image       = ERCD-0001.jpg
| banner      = Einherjar_Records_banner.png
| banner_res  = x60
| caption     = Portrayed: [[Sakuya Izayoi]], [[Reimu Hakurei]], [[Marisa Kirisame]] & [[Flandre Scarlet]]
| arranger    = Jean
: Seraph
| lyricist    = 
| vocalist    = 
| producer    = 
| illustrator = 
| designer    = 
| masterer    = 
| other_staff = 
| description = It features instrumental arrangements of themes from ''[[Perfect Cherry Blossom]]'', ''[[Imperishable Night]]'', ''[[Mountain of Faith]]'', ''[[Subterranean Animism]]'' and ''[[Dolls in Pseudo Paradise]]''.
| tracklist   =

* {{Track|01|Intro|02:18}}
** arrangement: Jean
** source: original track

* {{Track|02|sakurascape|08:55}}
** arrangement: Jean
** original title: {{lang|ja|さくらさくら　～}} Japanize Dream...
** source: {{PCB}}

* {{Track|03|Mountain of Faith|06:51}}
** arrangement: Seraph
** original title: {{lang|ja|神さびた古戦場　～}} Suwa Foughten Field
** source: {{MoF}}

* {{Track|04|174|04:10}}
** arrangement: Seraph
** original title: {{lang|ja|少女さとり　～}} 3rd eye
** source: {{SA}}

* {{Track|05|Singing under the Nighter-Night|06:27}}
** arrangement: Jean
** original title: {{lang|ja|夜雀の歌声　～}} Night Bird
** source: {{IN}}

* {{Track|06|Rhapsody in the rainy blue|05:07}}
** arrangement: Seraph
** original title: {{lang|ja|幻視の夜　～}} Ghostly Eyes
** source: {{IN}}

* {{Track|07|twilight U|06:46}}
** arrangement: Jean
** original title: {{lang|ja|桜花之恋塚　～}} Japanese Flower
** source: {{DiPP}}

* {{Track|08|Utopia|06:48}}
** arrangement: Seraph
** original title: {{lang|ja|天空の花の都}}
** source: {{PCB}}

* {{Track|09|Outro|02:43}}
** arrangement: Seraph
** source: original track

}}