{{Use mdy dates|date=November 2024}} {{Infobox song | name = A-Cha | cover = | caption = | alt = | border = | B-side = | type = single | artist = Super Junior | album = A-Cha | language = {{Hlist|Korean|Japanese}} | released = {{Start date|2011|09|19}} | recorded = 2011 | studio = SM Yellow Tail (Seoul) | venue = | genre = *Electrohouse<ref name="Herald">{{Cite news|url=https://news.heraldcorp.com/view.php?ud=20110924000064&pos=naver|title=슈퍼주니어, 강렬해진 ‘A-CHA’로 돌풍예고|date=September 24, 2011|access-date=November 14, 2024|work=Herald Corporation|language=ko|trans-title=Super Junior makes a splash with 'A-CHA'|last=Kim|first=Ha-jin}}</ref> *rock<ref name="Herald"/> | length = {{duration|m=3|s=18}} | label = *SM *KMP | lyricist = *{{ill|Kim Boo-min|ko|히치하이커 (음악가)}} (KR) *Leonn (JP) | composer = *Hitchhiker | producer = Hitchhiker |chronology=Super Junior | prev_title = Mr. Simple | prev_year = 2011 | next_title = Santa U Are the One | next_year = 2011 | misc = {{External music video|{{YouTube|GvTaLTTanJc|"A-Cha"}}|header=Music video|type=Single}} }}

"'''A-Cha'''" is a song recorded by South Korean boy band Super Junior that was released on September 19, 2011, by their label SM Entertainment and distributed by KMP Holdings as the lead single for their fourth reissue album ''A-Cha'', a reissue of the group's fifth studio album, ''Mr. Simple''. The Japanese version of the track is featured on the group's debut Japanese studio album, ''Hero'' which was released in 2013.

==Background== Following the release of the ''Mr. Simple'' album in August 2011, Super Junior announced plans for album reissue called ''A-Cha'' along with its lead single of the same name on September 15.<ref>{{Cite news|url=https://www.newsen.com/news_view.php?uid=201109151246141002|title=슈주 5집 리패키지 발매, 후속곡 활동 돌입|date=September 15, 2011|access-date=November 17, 2024|work=Newsen|language=ko|trans-title=Shuju 5th album repackage released, follow-up activities begin|last=Kwon|first=Soo-bin}}</ref> "A-Cha" was released on September 19, the same day as the reissue album's release.

==Composition== "A-Cha" features the vocals of nine active members — Leeteuk, Heechul, Yesung, Sungmin, Shindong, Eunhyuk, Donghae, Ryeowook, and Kyuhyun. Kangin was away on mandatory military service.<ref>{{Cite news|url=https://m.entertain.naver.com/article/001/0003339065|title=슈주 강인, 7월5일 현역 입대|date=June 18, 2010|access-date=October 25, 2024|work=Yonhap News Agency|publisher=Naver|language=ko|trans-title=Shuju Kang-in enlisted for active duty on July 5|last=Lee|first=Eun-jung}}</ref>

The song is based on electrohouse and rock which separated it from the group's existing dance songs such as "Sorry, Sorry" and "Bonamana" that were dubbed as "SJ Funky."<ref name="Chosun">{{Cite news|url=https://sports.chosun.com/news/ntype.htm?id=201109170100109350009761&servicedate=20110916|title=슈퍼주니어, 19일 'A-CHA' 공개! 'SJ펑크' 아니다|date=September 16, 2011|access-date=November 19, 2024|work=The Chosun Ilbo|language=ko|trans-title=Super Junior will release 'A-CHA' on the 19th! It's not 'SJ Punk'|last=Baek|first=Ji-eun}}</ref> The song's melody was composed and arranged by Hitchiker. It was composed in the key of D major with the tempo of 125 beats per minute.<ref>{{Cite web|url=https://tunebat.com/Info/A-CHA-SUPER-JUNIOR/4WViO9vKhU4imbEj5ykdoY|title=A-CHA Key & BPM|work=Tunebat|date=September 19, 2011|access-date=November 19, 2024}}</ref>

Its lyrics were penned by Kim Boo-min, narrating the song akin to Alonso Quijano of the ''Don Quixote'' novel, a character trying to hold on to his wavering lover.<ref>{{Cite news|url=https://www.starnewskorea.com/stview.php?no=2011091508460277006&type=1&outlink=1|title=슈퍼주니어, 19일 '아차' 로 후속활동 돌입|date=September 15, 2011|access-date=November 19, 2024|work=Star News|last=Yoon|first=Sung-yeol|language=ko|trans-title=Super Junior begins follow-up activities with 'Oops' on the 19th}}</ref>

==Music video== The teaser for the music video was released on the evening of September 23 on SM Town's YouTube and Facebook pages.<ref>{{Cite news|url=https://m.entertain.naver.com/article/001/0005281006|title=슈퍼주니어, 5집 리패키지 음반 활동|date=September 23, 2011|access-date=November 19, 2024|work=Yonhap News Agency|last=Lee|first=Eun-jung|location=Seoul|publisher=Naver|language=ko|trans-title=Super Junior, 5th Repackage Album}}</ref> The full music video was released on the following day.

==Commercial performance== In South Korea, "A-Cha" peaked at number 15 on Gaon Digital Chart for the 40th week of 2011, ranging from September 18 to September 24 and peaked at number 19 on the Korea K-Pop Hot 100.<ref name="Gaon">{{Cite web|url=http://gaonchart.co.kr/main/section/chart/online.gaon?nationGbn=T&serviceGbn=ALL&targetTime=40&hitYear=2011&termGbn=week|archive-url=https://web.archive.org/web/20211215091113/http://gaonchart.co.kr/main/section/chart/online.gaon?nationGbn=T&serviceGbn=ALL&targetTime=40&hitYear=2011&termGbn=week|archive-date=December 15, 2021|url-status=dead|website=Gaon|language=ko|title=2011년 40주차 Digital Chart|trans-title=Week of 40 of 2011 Digital Chart}}</ref><ref name="KH100">{{Cite magazine|url=http://www.billboard.com/charts/k-pop-hot-100/2011-10-08|title=BILLBOARD KOREA K-POP HOT 100|date=October 8, 2011|access-date=November 19, 2024|archive-url=https://web.archive.org/web/20180912135647/http://www.billboard.com/charts/k-pop-hot-100/2011-10-08|archive-date=September 12, 2018|url-status=dead|work=Billboard}}</ref> It sold 710,531 units.<ref>{{cite web|url=http://gaonchart.co.kr/digital_chart/download.php?nationGbn=T&current_month=09&current_year=2011&chart_Time=month|title=Gaon Download Chart – 2011 년 |work=Gaon|publisher=Korea Music Content Industry Association|access-date=November 19, 2024|url-status=dead |archive-url=https://web.archive.org/web/20140416210427/http://gaonchart.co.kr/digital_chart/download.php?nationGbn=T&current_month=09&current_year=2011&chart_Time=month|archive-date=April 16, 2014|language=ko|trans-title=Gaon Download Chart for September 2011}}</ref><ref>{{cite web|url=http://gaonchart.co.kr/digital_chart/download.php?nationGbn=T&current_month=10&current_year=2011&chart_Time=month|title=Gaon Download Chart – 2011년 10월|work=Gaon|publisher=Korea Music Content Industry Association|access-date=November 19, 2024|url-status=dead |archive-url=https://web.archive.org/web/20140323104935/http://gaonchart.co.kr/digital_chart/download.php?nationGbn=T&current_month=10&current_year=2011&chart_Time=month|archive-date=March 23, 2014|language=ko|trans-title=Gaon Download Chart for October 2011}}</ref>

In the United States, on ''Billboard'''s World Digital Song Sales chart, "A-Cha" peaked on number 2, spending 10 weeks on the chart.<ref name="WDT">{{Cite magazine|url=https://www.billboard.com/artist/super-junior/chart-history/wdt/|title=Super Junior World Digital Song Sales Chart History|access-date=November 19, 2024|work=Billboard|archive-url=https://web.archive.org/web/20230412200305/https://www.billboard.com/artist/super-junior/chart-history/wdt/|archive-date=April 12, 2023|url-status=live}}</ref>

==Live performances== Super Junior debuted "A-Cha" live on MBC's ''Show! Music Core'' on September 23.<ref>{{Cite news|url=https://www.newsen.com/news_view.php?uid=201109201413281001|title=예성-빅토리아 “새로운 커플은 바로 나” 다정 셀카 화제|date=September 20, 2011|access-date=November 19, 2024|work=Newsen|last=Jung|first=Ji-won|language=ko|trans-title=Yesung-Victoria "The new couple is me" Affectionate selfie topic}}</ref> The group performed the song during their appearances at KBS' ''Music Bank'' and SBS' ''Inkigayo'' on September 25.<ref>{{Cite news|url=https://www.starnewskorea.com/stview.php?no=2011092313435692068&type=1&outlink=1|title=슈주, 'A-CHA' 티저영상 공개…후속활동 시동|date=September 23, 2011|access-date=November 19, 2024|work=Newsen|last=Choi|first=Bo-ran|language=ko|trans-title=Shuju Releases Teaser Video for 'A-CHA'... Start a follow-up activity}}</ref>

The song is later included in the setlist of the group's debut world tour, Super Show 4.<ref>{{Cite web|url=https://superjunior-jp.net/discography/detail.php?id=1002121|title=SUPER JUNIOR WORLD TOUR SUPER SHOW4 LIVE in JAPAN|date=October 30, 2012|access-date=November 19, 2024|website=Super Junior Japan|publisher=Avex Trax|archive-url=https://web.archive.org/web/20230205081758/https://superjunior-jp.net/discography/detail.php?id=1002121|archive-date=February 5, 2023|url-status=live}}</ref>

== Charts ==

===Weekly charts=== {| class="wikitable plainrowheaders sortable" |- ! Chart (2011) ! Peak<br>position |- ! scope="row"| South Korea (Gaon)<ref name="Gaon"/> | align="center"| 15 |- ! scope="row"| South Korea K-pop Hot 100 (''Billboard'')<ref name="KH100"/> | align="center"| 19 |- ! scope="row"| US (World Digital Song Sales) (''Billboard'')<ref name="WDT"/> | align="center"| 2 |}

==Credits and personnel== Credits adapted from album's liner notes.<ref>{{Cite AV media notes|title=A-Cha|last=Super Junior|year=2011|at=Credits|type=photobook|publisher=SM Entertainment; KMP Holdings|location=South Korea}}</ref>

'''Studio''' * SM Yellow Tail Studio – recording, mixing * Sonic Korea – mastering

'''Personnel''' * SM Entertainment – executive producer * Lee Soo-man – producer * Super Junior – vocals * Hitchiker – producer, composition, arrangement, vocal directing, background vocals, guitar, synthesizer, sound programming * Kim Boo-min – Korean lyrics * Leonn – Japanese lyrics * Koo Jong-pil – recording, mixing * Jeon Hoon – mastering

==Release history== {| class="wikitable plainrowheaders" |+ Release history for "A-Cha" ! scope="col" | Region ! scope="col" | Date ! scope="col" | Version ! scope="col" | Format ! scope="col" | Label |- ! scope="row" rowspan="2" | Various<!--Inclusive of South Korea and Japan--> | September 19, 2011 | Korean | rowspan="2"|{{hlist|Digital download|streaming}} | {{hlist|SM|KMP}} |- |July 24, 2013 |Japanese |{{Hlist|Avex Trax}} |}

==References== {{Reflist}}

{{Super Junior singles}} {{Authority control}} Category:2011 singles Category:Electro house songs Category:SM Entertainment singles Category:Songs in Korean Category:Super Junior songs Category:South Korean electronic dance music songs Category:South Korean rock songs Category:2011 songs