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少女理論観測所

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Girls Logic Observatory performing live with several support mussicians at 新宿RUIDO K4 2018-02-03. From left to right: バツヲ (bass), 咲子 (vocals), うきね (vocals) テラ (guitar) & kent watari (drums). (twitter post)
踊る夜光蟲 (Dancing Fireflies) from the the circle's second mini album Dancing NightBug e.p. Released in 2013. The song is arranged by テラ featuring his vocals and guitar in addition to bass by バツヲ (半裸帝国).

Girls Logic Observatory logo

Girls Logic Observatory
Dates
July 2011 - present
Website
少女理論観測所 official website
Genre
Vocal, Instrumental, Rock, Pop, Jazz
Members
テラ (TERRA, aka 寺崎京介) - Arrangement, Guitar, Bass, Vocals (2011-2014), Recording & Mix (twitter)

Description

Girls Logic Observatory are a Touhou arrangement circle who's music is primarily arranged and performed by sole member テラ who initially arranged primarily vocal Rock but has since branched out to include arrangement styles such as Jazz, Salsa and Pop. Vocals for the circle are notably contributed by both male and female vocalists, テラ himself sang on every album released by the circle up until the release of their third full album Reversible Negophilia in 2014. Releases by the circle regularly feature female vocalist 咲子 who is the circle's longest running recurring vocalists having debuted on the circles first mini album over knowledge in 2012, female vocalist うきね who debuted on the circle first full album Like a Retrospective in 2013 is another regular vocalist along with male vocalist 保科 who debuted on the circles fourth full album Hollow Masquerade in 2015. In addition to テラ and the circle's group of recurring support vocalists there are also a number of guest vocalists who contribute on full length albums, noteworthy past guests included ななせ of じゃねっと亭, イチ of 少年ヴィヴィッド and 556t of Kairo while as of 2016 vocalists あやぽんず* of ShinRa-Bansho and ななひら of Confetto have made regular appearances.

Nearly every album released by the circle notably features unlisted bonus tracks, these tracks most commonly include off vocal versions of the album's vocal tracks in addition to a commentary track narrated by テラ himself discussing the specific album's tracks or concept. All of the circle's discography has been neatly divided into either singles, mini albums, full albums or collaboration albums. singles and mini albums primarily feature vocals by the circle's group of regular vocalists and feature tracks that often end up being re-recorded for later full albums. Full albums released by the circle notably feature a number of guest vocalists both male and female in addition to the circle's regular cast of support vocalists and will often feature new material in addition to re-recordings/re-masters of tracks from earlier mini albums and singles. Collaboration albums released by the circle often feature new material by the involved circles, re-arrangements or covers by the circles of each others past works and new collaborative material.


Discography

Feroce e.p..jpg

Feroce e.p.
Release date: 2011-08-13 (Comiket 80)
1st single
A single featuring vocal arrangements of themes from Imperishable Night and Phantasmagoria of Flower View. This short 2 track single would be fully re-recorded for the mini album Radio Disturbance (2012).

SRCD-001.jpg

over knowledge
Release date: 2012-05-27 (Reitaisai 9)
1st mini album
An album featuring vocal arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night and Mountain of Faith in addition to off vocal tracks. Most of the mini album would be re-recorded for the full album Like a Retrospective (2013) and single Dancing NightBug e.p. (2013). It is the first album to feature female vocalist 咲子.

SRCD-002.jpg

Radio Disturbance
Release date: 2012-08-11 (Comiket 82)
2nd mini album
An album featuring vocal arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Subterranean Animism and Undefined Fantastic Object in addition to off vocal tracks. Most of the mini album would be re-recorded on later releases by the circle.

魔法少女達の音楽祭コンピCD.jpg

魔法少女達の音楽祭コンピCD
Release date: 2013-03-16
An album featuring vocal arrangements of themes from Perfect Cherry Blossom, Mountain of Faith, Undefined Fantastic Object, Shuusou Gyoku.

SRCD-003.jpg

Like a Retrospective
Release date: 2013-05-26 (Reitaisai 10)
1st full album
An album featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Phantasmagoria of Flower View, Shoot the Bullet, Mountain of Faith, Subterranean Animism, Undefined Fantastic Object and more...?? It is the first album to feature female vocalist うきね.

SRCD-004.jpg

Alternative Egophobia
Release date: 2013-10-13 (Touhou Kouroumu 9)
3rd mini album
An album featuring vocal and instrumental arrangements of themes from Lotus Land Story, Imperishable Night, Subterranean Animism and Undefined Fantastic Object in addition to off vocal tracks. The entirety of the mini album would be touched up and re-released on the full album Reversible Negophilia.

HSCD-01.jpg

観測史学のニンフォフィリア
Release date: 2013-10-13 (Touhou Kouroumu 9)
A collaboration album with High speed little girl
An album featuring vocal arrangements of themes from Embodiment of Scarlet Devil, Immaterial and Missing Power, and Undefined Fantastic Object.

SRCD-005.jpg

Dancing NightBug e.p.
Release date: 2013-12-30 (Comiket 85)
2nd single
A single featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil, and Imperishable Night, as well as a commentary track. The single features 2 re-recordings from the mini album over knowledge and 1 instrumental unique to the single.

SRCD-006.jpg

Termination Antithesis
Release date: 2014-05-11 (Reitaisai 11)
4th mini album
An album featuring vocal arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Undefined Fantastic Object, Ten Desires and Perfect Memento in Strict Sense in addition to off vocal tracks. The entirety of the mini album would be touched up and re-released on the full album Border on Blossom.

SRCD-007.jpg

Lapin Lunaire
Release date: 2014-08-16 (Comiket 86)
2nd full album
An album featuring vocal and instrumental arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Subterranean Animism, Undefined Fantastic Object, and Fairy Wars, as well as a commentary track.

魔法少女達の音楽祭 vol.2 compilation CD.jpg

魔法少女達の音楽祭 vol.2 compilation CD
Release date: 2014-08-17
A compilation album featuring vocal arrangements of themes from Mystic Square, Embodiment of Scarlet Devil, Immaterial and Missing Power, Imperishable Night, and Subterranean Animism.

SSCD-001.jpg

少女は雅、花は鄙
Release date: 2014-10-12 (Touhou Kouroumu 10)
Satellite Himawari×少女理論観測所Split full album
A collaboration album featuring vocal arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, and Shoot the Bullet, as well as a commentary track.

SRCD-008.jpg

Reversible Negophilia
Release date: 2014-12-29 (Comiket 87)
3rd full album
An album featuring vocal and instrumental arrangements of themes from Lotus Land Story, Imperishable Night, Phantasmagoria of Flower View, Subterranean Animism, and Undefined Fantastic Object, as well as a commentary track. It is a full album version of the mini album Alternative Egophobia and features redone versions of the entire original album in addition to new tracks.

SRCD-009.jpg

Hollow Masquerade
Release date: 2015-05-10 (Reitaisai 12)
4th full album
An album featuring vocal and instrumental arrangements of themes from Mountain of Faith, Subterranean Animism, Undefined Fantastic Object, Ten Desires, Hopeless Masquerade, and Double Dealing Character, as well as a commentary track. It is the first album to feature male vocalist 保科.

SHJT-001.jpg

みつどもえ・センセイション
Release date: 2015-08-14 (Comiket 88)
しょじょろん×へたよこ×じゃね亭 Joint CD
A collaboration album featuring vocal arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, and Undefined Fantastic Object, as well as a commentary track.

SRCD-010.jpg

Alice in Jewelryland
Release date: 2015-10-18 (Autumn Reitaisai 2)
5th mini album
An album featuring vocal arrangements of themes from Mystic Square, Embodiment of Scarlet Devil, Perfect Cherry Blossom and Undefined Fantastic Object in addition to off vocal tracks. The entirety of the mini album would be touched up and re-released on the full album 絵本仕掛けのワンダーランド.

SRCD-011.jpg

Decadent Recreation e.p.
Release date: 2015-12-30 (Comiket 89)
3rd single
A single featuring vocal arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Ten Desires, Magical Astronomy, as well as a commentary track. The single features 1 track that would appear on ParallelEnd Observer in addition to 3 re-recordings sung by 保科 of songs originally sung テラ.

SRCD-012.jpg

Border on Blossom
Release date: 2016-05-08 (Reitaisai 13)
5th full album
An album featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Undefined Fantastic Object, Ten Desires and Perfect Memento in Strict Sense in addition to off vocal tracks. It is a full album version of the mini album Termination Antithesis and features redone versions of the entire original album in addition to new tracks.

SRCD-013.jpg

ParallelEnd Observer
Release date: 2016-08-13 (Comiket 90)
6th full album
An album featuring vocal arrangements of themes from Ghostly Field Club, Changeability of Strange Dream, Retrospective 53 minutes, Magical Astronomy, Trojan Green Asteroid, Neo-traditionalism of Japan and Dr. Latency's Freak Report in addition to off vocal tracks.

SRCD-015.jpg

絵本仕掛けのワンダーランド
Release date: 2017-05-07 (Reitaisai 14)
7th full album
An album featuring vocal and off vocal arrangements of themes from Mystic Square, Embodiment of Scarlet Devil, Perfect Cherry Blossom and Legacy of Lunatic Kingdom. It is a full album version of the mini album Alice in Jewelryland and features remastered versions of the entire original album in addition to new tracks.

SRCD-016.jpg

TIME STRANGER
Release date: 2017-08-11 (Comiket 92)
8th full album
An album featuring vocal and off vocal arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Mountain of Faith and Undefined Fantastic Object.

SRCD-017.jpg

Delight Hour e.p.
Release date: 2017-09-18 (Kagaku Seiki no Café Terrace 7)
4th single
A single featuring vocal arrangements of themes from Magical Astronomy and Dateless Bar "Old Adam". The single features 2 new arrangements and 2 alternate versions of previously released arrangements.

SRCD-018.jpg

Cat Trick e.p.
Release date: 2017-10-22 (Touhou Kouroumu 13)
5th single
A single featuring vocal and instrumental arrangements of themes from Perfect Cherry Blossom and Subterranean Animism. The single features 2 new arrangements and 1 live recording.

SRCD-019.jpg

Silent Reality
Release date: 2017-12-29 (Comiket 93)
9th full album
An album featuring vocal arrangements of themes from Embodiment of Scarlet Devil, Shoot the Bullet, Mountain of Faith, Scarlet Weather Rhapsody and Subterranean Animism.

SRCD-020.jpg

Spring Spring -Four Seasons Library vol.1-
Release date: 2018-05-06 (Reitaisai 15)
10th full album
An album featuring vocal and off vocal arrangements of themes from Perfect Cherry Blossom, Fairy Wars, Ten Desires, Legacy of Lunatic Kingdom and Hidden Star in Four Seasons. It is the first in a planned series of seasonally themed releases.

東方の乱第一戦、演奏音記録.jpg

東方の乱第一戦、演奏音記録
Release date: 2018-05-06 (Reitaisai 15)
Collaboration album with Pizuya's Cell, Monochrome Murder Scene Photo & Sekken'ya.
Two albums featuring vocal arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Mountain of Faith, Subterranean Animism, Undefined Fantastic Object, Ten Desires, Hidden Star in Four Seasons, Ghostly Field Club, Retrospective 53 minutes, Magical Astronomy, Unknown Flower, Mesmerizing Journey, Trojan Green Asteroid and Dr. Latency's Freak Report.

SRCD-021.jpg

FLOWERING SUMMER -Four Seasons Library vol.2-
Release date: 2018-08-10 (Comiket 94)
11th full album
An album featuring vocal and off vocal arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Undefined Fantastic Object, Double Dealing Character and Hidden Star in Four Seasons.

SRCD-022.png

FALL FEEL FALL -Four Seasons Library vol.3-
Release date: 2018-10-14 (Autumn Reitaisai 5)
12th full album
An album featuring vocal and off vocal arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Mountain of Faith, Subterranean Animism, Double Spoiler and Hidden Star in Four Seasons.

SRCD-023.jpg

Chillout Winter -Four Seasons Library vol.4-
Release date: 2018-12-30 (Comiket 95)
13th full album
An album featuring vocal and off vocal arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Immaterial and Missing Power, Subterranean Animism, Undefined Fantastic Object and Hidden Star in Four Seasons.

SRCD-024.jpg

Pieces of Seasons -Four Seasons Library Extra-
Release date: 2019-05-05 (Reitaisai 16)
14th full album
An album featuring vocal and off vocal arrangements of themes from Imperishable Night, Mountain of Faith, Undefined Fantastic Object, Double Dealing Character, Legacy of Lunatic Kingdom, Hidden Star in Four Seasons.

SRCD-025.jpg

showcase i
Release date: 2019-05-05 (Reitaisai 16)
15th full album
An album featuring vocal and off vocal arrangements of themes from Lotus Land Story, Embodiment of Scarlet Devil, Imperishable Night, Mountain of Faith and Subterranean Animism.

Limited Single CD VOL.3.jpg

Limited Single CD VOL.3 -Tokyo- キクニサカヅキ
Release date: 2019-05-05 (Reitaisai 16)
Collaboration album with GET IN THE RING
An album featuring two vocal and instrumental arrangements of themes from Undefined Fantastic Object and Ten Desires.

SRCD-026.jpg

Rozen Garten
Release date: 2019-08-12 (Comiket 96)
16th full album
An album featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil, Imperishable Night, Phantasmagoria of Flower View, Mountain of Faith and Double Dealing Character.

SRCD-027.jpg

Girls Logic Rock Show Vol.1
Release date: 2019-05-05 (Reitaisai 16)
17th full album
An album featuring vocal and instrumental arrangements of themes from Perfect Cherry Blossom, Undefined Fantastic Object and Trojan Green Asteroid plus an original track.

SRCD-028.jpg

東方Hyper Grooving Jazz Music Vol.1
Release date: 2019-05-05 (Reitaisai 16)
Collaboration album with N!ESS
An album featuring instrumental arrangements of themes from Mountain of Faith, Subterranean Animism and Undefined Fantastic Object plus a couple original tracks.

SRCD-029.jpg

Black/White
Release date: 2019-12-31 (Comiket 97)
18th full album
An album featuring vocal and instrumental arrangements of themes from Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Mountain of Faith, Subterranean Animism, Undefined Fantastic Object and Legacy of Lunatic Kingdom plus an original track.

SRCD-030.jpg

Girls Logic Rock Show Vol.2
Release date: 2020-03-22 (Reitaisai 17)
19th full album
An album featuring vocal and instrumental arrangements of themes from Imperishable Night, Subterranean Animism, Retrospective 53 minutes and Magical Astronomy plus a few original tracks.

SCD-031.jpg

Delight Hour e.p.2020
Release date: 2020-10-18 (Autumn Reitaisai 7)
20th full album
An album featuring vocal arrangements of themes from Retrospective 53 minutes, Magical Astronomy, Dateless Bar "Old Adam".

SCD-032.jpg

showcase ii
Release date: 2021-03-21 (Reitaisai 18)
21st full album
An album featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View and Ten Desires.

SCD-033.jpg

非合理論理ショー
Release date: 2021-08-14 (Touhou Arrange Kasseika Daisakusen)
6th single
An album featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil and Imperishable Night plus an original track.

SRCD-034.png

不埒なカクテル
Release date: 2021-12-31 (Comiket 99)
7th single
An album featuring vocal and instrumental arrangements of themes from Dateless Bar "Old Adam" plus an original track.

SRCD-035.jpg

Miracle Shift Parade
Release date: 2022-05-08 (Reitaisai 19)
22nd full album
An album featuring vocal arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Mountain of Faith, Subterranean Animism, Undefined Fantastic Object, Great Fairy Wars, Hopeless Masquerade, Legacy of Lunatic Kingdom and Magical Astronomy.

SRCD-036.jpg

ParallelEnd Observer -Refrain-
Release date: 2022-08-14 (Comiket 100)
23rd full album
An album featuring vocal and instrumental arrangements of themes from Ghostly Field Club, Changeability of Strange Dream, Retrospective 53 minutes, Magical Astronomy, Trojan Green Asteroid, Neo-traditionalism of Japan, Dr. Latency's Freak Report and Dateless Bar "Old Adam".

SRCD-037.jpg

ワンルール・ゲームチェンジャー
Release date: 2022-10-23 (Autumn Reitaisai 9)
8th single
An album featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil and Perfect Cherry Blossom.

SRCD-038.jpg

Lost Memory
Release date: 2022-12-31 (Comiket 101)
9th single
An album featuring vocal and instrumental arrangements of themes from Ten Desires and Unconnected Marketeers.

SRCD-039.jpg

showcase iii
Release date: 2023-05-07 (Reitaisai 20)
24th full album
A compilation album featuring vocal and instrumental arrangements of themes from Lotus Land Story, Embodiment of Scarlet Devil, Imperishable Night, Mountain of Faith, and Unconnected Marketeers.

ALIVER!.png

ALIVER!
Release date: 2023-05-07 (Reitaisai 20)
Collaborative album with Inorai and AbsoЯute Zero.
It features vocal arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Mountain of Faith, Subterranean Animism, and Undefined Fantastic Object.

SRCD-040.jpg

甘い嘘
Release date: 2023-08-13 (Comiket 102)
10th single
An album featuring vocal and instrumental arrangements of themes from Ten Desires and Wily Beast and Weakest Creature plus an original track.

SRCD-041.jpg

ショウジョリロンアーカイブス
Release date: 2023-11-12 (Autumn Reitaisai 10)
25th full album
Two albums featuring vocal arrangements of themes from Mystic Square, Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Mountain of Faith, Subterranean Animism, Undefined Fantastic Object, Double Spoiler, Ten Desires, Hopeless Masquerade, Hidden Star in Four Seasons, Unconnected Marketeers, Retrospective 53 minutes, Trojan Green Asteroid and Dr. Latency's Freak Report.

アンチモラル・トリックスター.jpg

アンチモラル・トリックスター
Release date: 2023-12-31 (Comiket 103)
11th single
An album featuring a vocal arrangement of a theme from Ten Desires.

SRCD-043.jpg

showcase ⅳ
Release date: 2024-05-03 (Reitaisai 21)
26th full album
An album featuring vocal and instrumental arrangements of themes from Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Ten Desires, Hopeless Masquerade, Legacy of Lunatic Kingdom and Wily Beast and Weakest Creature.

SRCD-044.jpg

遍在する偏愛
Release date: 2024-08-12 (Comiket 104)
12th single
An album featuring vocal and instrumental arrangements of themes from Retrospective 53 minutes, Magical Astronomy, Neo-traditionalism of Japan and Taboo Japan Disentanglement.

SRCD-045.jpg

ショウジョリロン裏アーカイブス
Release date: 2024-10-20 (Autumn Reitaisai 11)
Two albums featuring vocal and instrumental arrangements of themes from Lotus Land Story, Embodiment of Scarlet Devil, Perfect Cherry Blossom, Imperishable Night, Phantasmagoria of Flower View, Shoot the Bullet, Mountain of Faith, Scarlet Weather Rhapsody, Subterranean Animism, Undefined Fantastic Object, Great Fairy Wars, Ten Desires, Double Dealing Character, Legacy of Lunatic Kingdom, Hidden Star in Four Seasons, Wily Beast and Weakest Creature, Perfect Memento in Strict Sense (CD), Ghostly Field Club, Changeability of Strange Dream, Magical Astronomy and Dateless Bar "Old Adam".

Original CDs

These CDs are original compositions by Girls Logic Observatory

SRCD-014.jpg

SUGAREDEN
Release date: 2016-10-30 (M3-38)
An album featuring vocal original compositions.

Guest Arrangements