{{MusicArticle
| titlejp     ={{lang|en|EcHo}}！ -エコー！-
| titleen     =EcHo!
| group       =[[K2 SOUND]]
| groupCat    =K2 SOUND
| released    =2011-12-30
| convention  =Comiket 81
| tracks      =8
| length      =35:27
| catalogno   =K2SD-007
| website     =[http://www.c-clays.com/work/echo/ Updated Link]<br>
[http://blog.c-clays.com/?eid=1425442 Original Link]
| image       =K2SD-007.jpg
| arranger    =Y
:Buraijin Hajime
:K2
:tsunamix
:Sion
:Kyoutansu
:W*M
| lyricist    =Y
:Amane Miyu
:W*M
:Buraijin Hajime
| vocalist    =Y
:Iroha to Hanon
:Mai Kotohge
:spica
| illustrator ={{植田亮}} ([http://fancyfantasia.jp/ FancyFantasia])
| designer    =[http://winfanworks.com/ WINFANWORKS]
| producer    =K2
:{{綾瀬 孝}}
; Direction
:{{lang|ja|若園 湊}}
| other_staff =
;Guitar
:Sassy ([[君の美術館|kimino-museum]])
:{{lang|ja|みゅうじこむず}}
; Synth Programming (Track 01)
:Y

| description =It featuring vocal and instrumental arrangements of themes from ''[[Ten Desires]]''.

| tracklist   =
*{{track|01|As if by magic|??:??|lyrics=Lyrics: As if by magic}}
** arrangement: Y
** lyrics: Y
** vocals: Y
** synth programming: Y
** original title: {{lang|ja|古きユアンシェン}}
** source: {{TD}}

*{{track|02|{{lang|ja|絶望}}Reincarnation|??:??|lyrics=Lyrics: 絶望Reincarnation}}
** ''Despair Reincarnation''
** arrangement: Buraijin Hajime
** lyrics: Buraijin Hajime
** vocals: Iroha to Hanon
** original title: {{lang|ja|デザイアドリーム}}
** source: {{TD}}

*{{track|03|Fantasista Gate|??:??|lyrics=Lyrics: Fantasista Gate}}
** arrangement: K2
** lyrics: Amane Miyu
** vocals: Mai Kotohge
** Sassy
** original title: {{lang|ja|デザイアドライブ}}
** source: {{TD}}

*{{track|04|Secret Code: 633-8538|??:??}}
** arrangement: tsunamix
** original title: {{lang|ja|大神神話伝}}
** source: {{TD}}

*{{track|05|Lost Age|??:??|lyrics=Lyrics: Lost Age}}
** arrangement: Sion
** lyrics: Amane Miyu
** vocals: spica
** original title: {{lang|ja|夢殿大祀廟}}
** source: {{TD}}

*{{track|06|Deep forest where a dragon sleeps|??:??}}
** arrangement: Kyoutansu
** original title: {{lang|ja|佐渡のニッ岩}}
** source: {{TD}}

*{{track|07|Winter's tale|??:??}}
** arrangement: Buraijin Hajime
** original title: {{lang|ja|妖怪裏参道}}
** source: {{TD}}

*{{track|08|Last Notice|??:??|lyrics=Lyrics: Last Notice}}
** arrangement: W*M
** lyrics: W*M
** vocals: Mai Kotohge
** guitar: {{lang|ja|みゅうじこむず}}
** original title: {{lang|ja|死霊の夜桜}}
** source: {{TD}}
}}