え？あぁ、そう。 (E? Aa, Sou.)

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|-|Original Version=
|-|10th Anniversary Edition=
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==Background==
"E? Aa, Sou." is an original song by Chouchou-P featuring Hatsune Miku. Famous for utilizing Miku's lower octave vocals as well as spawning numerous high-quality fandubs and parodies, this speedy piano light rock song portrays Miku as a somewhat older, reckless and nymphomaniac "Carnivorous Girl" who exploits masculine lust to her own advantage. It has reached the Hall of Legend, and is one of Chouchou-P's most notable songs.
A sample of this song, along with a couple other songs, was used showcasing the Original Voice of in the upcoming Piapro Studio engine.
==Succeeding versions==
==Lyrics==
Japanese (日本語歌詞) 	Romaji (ローマ字)
建前だけの感情論で全てを量ろうなんて 	tatemae dake no kanjouron de subete wo hakarou nante
そんなのはお門違い、笑わせないでよね 	sonna no wa okadochigai, warawasenaide yo ne
 	
だけどたまには楽しいことも必要だと思うの 	dakedo tama niwa tanoshii koto mo hitsuyou da to omou no
気が済むまで私も満足したいわ 	ki ga sumu made watashi mo manzokushitai wa
 	
目の前から消えていった心を刺す嘘みたいに 	me no mae kara kieteitta kokoro wo sasu uso mitai ni
ぐるぐるって混ざる様なこの感じがたまらない 	guruguru tte mazaru youna kono kanji ga tamaranai
 	
ねぇ、ぶっ飛んじゃうのが良いなら 	nee, buttonjau no ga ii nara
私をもっと本気にさせて 	watashi o, motto honki ni sasete
逃げるなんて許さないわ 	nigeru nante yurusanai wa
やっぱりそんな程度なのかしら 	yappari sonna teido nano kashira
 	
甘いのもいいと思うけれど苦いのも嫌いじゃない 	amai no mo ii to omou keredo nigai no mo kiraijanai
そんな私の事を我儘だと言うの？ 	sonna watashi no koto o wagamamada to iuno?
 	
馬鹿だとかアホらしいとか言いたいだけ言えばいいわ 	bakada toka ahorashii toka iitai dake ieba ii wa
他人(ヒト)の価値観なんて私は知らないの 	hito no kachikan nante watashi wa shiranai no
 	
掌から落ちていった紫色の花みたいに 	tenohira kara ochiteitta murasaki iro no hana mitai ni
くるくるって踊る様なこの感じがたまらない 	kurukuru tte odoru youna kono kanji ga tamaranai
 	
さぁ、どうなっちゃうのか見せてよ 	saa, dounacchau no ka misete yo
本能？理性？どちらが勝つの 	honnou? risei? dochira ga katsu no
超絶倫【自主規制】で魅せてよ 	chou zetsurin *** de misete yo
本当はここを欲しがるくせに 	hontou wa koko wo hoshigaru kuse ni
 	
嬉しいとか気持ち良いとか 	ureshii toka kimochi yoi toka
所詮それは自己満足 	shosen sore wa jikomanzoku
そういうのって投げ捨てちゃって 	sou iu no tte nagesutechatte
いいんじゃない？って思わせて 	iinjanai? tte omowasete
 	
もうぶっ飛んじゃったら良いでしょ 	mou button jattara ii desho
一体どこに不満があるの？ 	ittai doko ni fuman ga aru no?
いっそこうなったら逃がさない 	isso kou nattara nigasanai
だからね、ほらね、覚悟して 	dakara ne, hora ne, kakugoshite
 	
さぁ、どうなっちゃってもいいから 	saa, dounacchattemo ii kara
その目で最後まで見届けて 	sono me de saigo made mitodokete
どこまでイッても止まらない 	dokomade ittemo tomaranai
だけどね、でもね、そろそろ限界 	dakedo ne,　demo ne, sorosoro genkai
 	
あぁもうダメ… 	aa mou dame...
AHHHHHHHHHHH 	
==Derivatives==
==Other media appearances==
===Literatures===
This song was featured in the following literatures:
* Vocaloid Best Selection series. (sheet music)
===Discography===
This song was featured in the following albums:
* pianythm
* Glorious World
This song was featured in the following compilation albums:
* Vocaloanthems
* VOCALOID BEST from ニコニコ動画 (あか)
* 初音ミク -Project DIVA- F Complete Collection
* EXIT TUNES ACADEMY BEST 3
* MAYU LOVES -First- (MAYU's Cover)
* Vocalohistory
===Concerts===
This song was featured in the following concerts:
* MikuPa Live in Tokyo 2011
* MikuPa Live in Sapporo 2011
* MikuPa Live in Singapore 2011
* MikuPa Live in Tokyo 2012
* MikuPa Live in Kansai 2013
===Video games===
This song was featured in the following video games:
* Hatsune Miku -Project DIVA- f
* Hatsune Miku -Project DIVA- Arcade Future Tone
* Zion (MAYU exclusive pack)
* (Virtual Singer version by Hatsune Miku; SEKAI version by Vivid BAD SQUAD and Hatsune Miku)
==Gallery==
E_aa_sou_f_loading_screen.png|rira009's loading screen, for the song "E? Aa, Sou.". From the video game -Project DIVA- f.
f-purpleageha.png|Miku's "Purple Ageha" module for the song "E? Aa, Sou.", designed by riria009. From the video game -Project DIVA- f.
Miku 125.jpg|Miku's "Purple Ageha" module for the song "E? Aa, Sou.", designed by riria009. From the video game -Project DIVA- Arcade Future Tone.
Games - Project DIVA - E Aa, Sou..jpg|Music jacket featured in -Project DIVA- Arcade Future Tone and Mega Mix
Games - Project SEKAI - え？あぁ、そう。.png|Music jacket featured in Project SEKAI COLORFUL STAGE! feat. Hatsune Miku
==External links==
===Official===
===Unofficial===
Category:Original songs
Category:Japanese songs
Category:Songs featuring Hatsune Miku
Category:Concert songs
Category:Video game songs
Category:Songs featured in literatures
Category:Demonstration songs
Category:Mobile game songs