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Song Information

ÆTHER's jacket.

Artist: TAG underground
Composition/Arrangement: TAG
BPM: 192 (beatmania IIDX, REFLEC BEAT), 192-384 (DanceDanceRevolution)
Length: 2:01
VJ: Steins
Jacket design: 07
First Music Game Appearance: REFLEC BEAT colette -Summer-
Other Music Game Appearances:


The following lyrics are from the We are “Try to Singers” album for ÆTHER -Try to Sing Ver.-. The original ÆTHER has no vocals.


待ったなしのスピードで  やってくる時間に
本当のことを託したら  気づけば後に引けない
ひょっとしたらこれ以上  入り込んでしまう?
まっさらな紙の上で  物語が動き出す
積み重ねた砂の城  何度も壊されて  やっと悟る
心ごと海に溶けて  泡になる

それは青く青く  ただよう陽炎
揺れる  揺れる  幻のよう
巡り巡る神秘の扉を  開いたその先へ...

それは青く青く  ただよう陽炎
揺れる  揺れる  幻のよう
巡り巡る神秘の扉を  開いて見つけた

それを辿る辿る  真理の迷路
揺らぐ  揺らぐ  命の模様
めくりめくる  ページの最後に  刻んで残した

それは続く続く  まばゆい継承
宿る  宿る  魂、鼓動
5つのNeed for the ÆTHER


matta nashi no SPEED de yattekuru jikan ni
hontou no koto wo takushitara kizukeba ato ni hikenai
hyottoshitara kore ijou hairikon de shimau?
massarana kami no ue de monogatari ga ugokidasu
tsumikasaneta suna no shiro nando mo kowasarete yatto satoru
kokoro goto umi ni toke de awa ni naru

sore wa aoku aoku tadayou kagerou
yureru yureru maboroshi no you
meguri meguru shinpi no tobira wo aita sono saki e...

sore wa aoku aoku tadayou kagerou
yureru yureru maboroshi no you
meguri meguru shinpi no tobira wo aite mitsuketa

sore wo tadoru tadoru shinri no meiro
yuragu yuragu inochi no moyou
mekuri mekuru PAGE no saigo ni kizan de nokoshita

sore wa tsuzuku tsuzuku mabayui keishou
yadoru yadoru tamashii, kodou
hikari hikaru mirai no rekishi e tsutaeru
itsutsu no Need for the ÆTHER

Song Connections / Remixes

  • ÆTHER shares some similarities with Cosmic Hurricane, from the Tsugidoka! (つぎドカ!) event.
  • The version of ÆTHER used in the beatmania IIDX, DanceDanceRevolution, and ミライダガッキ series has louder piano sounds in the middle of the song.
    • This version of ÆTHER appears in the DanceDanceRevolution Original Soundtrack Vol.2 album.
  • The ending part of ÆTHER utilizes a similar sounding portion of PARANOiA Revolution's beat structure, from DanceDanceRevolution X3 VS 2ndMIX.
  • A vocal version of ÆTHER by Hommarju, titled ÆTHER –Try to Sing Ver.-, can be found on the We are “Try to Singers” album.
    • An instrumental version of ÆTHER –Try to Sing Ver.- also appears on We are “Try to Singers”.


  • ÆTHER is one of the unlockable songs of the second phase of REFLEC BEAT colette -Summer-'s Pastel Adventure colette Fishing unlocking system.
  • ÆTHER is Yasuhiro Taguchi's first non-DanceDanceRevolution original song under his TAG underground alias.
    • It is also Yasuhiro Taguchi's first song in the REFLEC BEAT series with a HARD chart rated Level 10+ (11 or 12 in REFLEC BEAT VOLZZA/VOLZZA 2).
  • According to ancient and medieval science, æther or ether is the material that fills the region of the universe above the terrestrial sphere.
  • In REFLEC BEAT, ÆTHER'S BPM halves to 96 in the middle of the song.
    • In DanceDanceRevolution, all of ÆTHER'S BPM values are doubled.
  • ÆTHER was added as a default song to beatmania IIDX 21 SPADA on March 25th, 2014, as part of the TAG seitansai (TAG生誕祭) event.
  • ÆTHER is one of DanceDanceRevolution (2013)'s special EXTRA STAGE songs. It was added on March 25th, 2014, as part of the TAG生誕祭 event.
    • ÆTHER and esrev:eR are the first BEMANI crossover songs in the arcade DanceDanceRevolution series that are used as EXTRA STAGE songs.
    • In DanceDanceRevolution (2014), it could be unlocked via the EXTRA ATTACK unlocking method.
    • From December 17th, 2015 onwards, ÆTHER has been automatically unlocked for all players.
  • From DanceDanceRevolution (2014) onwards, ÆTHER appears in the DanceDanceRevolution (2014) folder instead of the (2013) folder.
  • In DanceDanceRevolution (2014), before June 17th, 2014, ÆTHER was sorted alphabetically after A Stupid Barber, which meant it was sorted as "ATHER". It is now sorted between Adularia and AFRONOVA, as "AETHER".
  • After being removed from the initial release of REFLEC BEAT 悠久のリフレシア, ÆTHER was revived on December 28th, 2017.
  • ÆTHER is available in beatmania IIDX INFINITAS as part of the beatmania IIDX INFINITAS 楽曲パック vol.6.
  • ÆTHER's difficulty changes from DanceDanceRevolution A20 were applied to DanceDanceRevolution A in March 27th, 2019.

Song Production Information


Video Production Information


Difficulty & Notecounts

beatmania IIDX difficulty rated from 1 to 12.
DanceDanceRevolution difficulty rated from 1 to 20 from X onwards.
REFLEC BEAT to groovin'!! Upper difficulty rated from 1 to 10+, 1 to 13 in VOLZZA/VOLZZA 2, and 1 to 15 in 悠久のリフレシア. (Ratings and notecounts obtained from BEMANIWiki 2nd.)

beatmania IIDX

Game SP Difficulty DP Difficulty
Notecounts - 514 833 1440 - 542 839 1385 -
beatmania IIDX 21 SPADA→Present - 5 8 11 - 5 8 11 -
beatmania IIDX INFINITAS - 5 8 11 - 5 8 11 -


Game Single Double
Beginner Basic Difficult Expert Challenge Basic Difficult Expert Challenge
Notecounts / Freeze Arrows / Shock Arrows 215 / 11 372 / 26 551 / 23 704 / 6 - / - / - 368 / 25 550 / 19 688 / 9 - / - / -
DanceDanceRevolution (2013)→(2014) 6 9 14 17 - 9 14 17 -
DanceDanceRevolution A→Present 6 9 14 17 - ↑10 14 17 -


Old Charts

Game Level
Basic Medium Hard Special
Notecounts 248 475 780 -
REFLEC BEAT colette -Summer-→groovin'!! Upper 5 8 10+ -
REFLEC BEAT plus 5 8 11 -
REFLEC BEAT + 5 8 10+ -

New Charts

Game Level
Basic Medium Hard White
Notecounts 258 521 796 -
REFLEC BEAT 悠久のリフレシア 7 10 13 -

PASTEL ADVENTURE (パステルアドベンチャー)
colette Climbing (コレットクライミング)
colette Mountain 1 Aerial Skydive - Almace -HI SPEED EDITION- - Blind Justice ~Torn souls, Hurt Faiths~ - Clumsy thoughts - GLITTER
guerre à outrance - Ignited Night - It's my Miracle - MANA - Our Faith - ROUND! - 愛は不死鳥の様に - 幻想雷神記
colette Mountain 2 December Breeze - Fantasia - In Heaven - London EVOLVED - Wizard - 純白レジエンド -冬-
colette Mountain 3 DOUBLE IMPACT - Vairocana - WONDER WALKER
Legendary Mountain Valanga
colette Garden (コレットガーデン)
Phase 1 ARACHNE - Following Flow - Lights On Me - Playing With Fire - Windy Fairy - Wow Wow VENUS - 黒点 - みんな笑った
追儺の桜 -春-
Phase 2 Honey Party - Nostalgia Is Lost - printemps - 水鏡
Final Phase ストレイ・マーチ
colette Fishing (コレットフィッシング)
Phase 1 EMPEROR OF THE AVALON - Flying soda - Knell - SPARKLE - アラベスクの回廊 - リリーゼと炎龍レーヴァテイン
Phase 2 ÆTHER - Legendary Dragon - Little Flipper - serendipity
Final Phase 7 Colors - Blade - Last Memento -花火のない夏- - 太陽の子 - 海神
Hidden Song ペリーでぇす!
colette Harvest (コレットハーベスト)
Phase 1 Beautiful Dream - Candy Drop - Like+it! - RAGNAROK - キルト - ロボット☆ライフ
Phase 2 Ground Shake - Lapis Philosophorum - 三毛猫JIVE&ジャイブ - にゃんだふる55
Final Phase fallen leaves - polygon - 空葬 - 少年リップルズ