{{Short description|2012 single by A-Jax}} {{Infobox song | name = One 4 U | cover = One4U-singlecover.jpeg | alt = | type = single | artist = A-Jax | album = 2MYX | B-side = Never Let Go | released = June 1, 2012 | recorded = 2012 | studio = | venue = | genre = K-pop, Rock | length = 03:57 | label = DSP Media | writer = Steven Lee | producer = Steven Lee | chronology = A-Jax Korean | prev_title = | prev_year = | next_title = Hot Game | next_year = 2012 | misc = {{External music video|{{YouTube|M5LtlBuS3H4|"One 4 U"}} }} }}

"'''One 4 U'''" (Japanese: {{lang|ja|ワン・フォー・ユー}} ''Wan Fō Yū''; Korean: {{lang|ko|원포유}} ''Wonpoyu'') is a song by South Korean boy band A-Jax. It was released on June 1, 2012 as the group's debut single.<ref name=one4u>{{cite web|url=http://music.daum.net/album/main?album_id=604033|archive-url=https://archive.today/20130111220422/http://music.daum.net/album/main?album_id=604033|url-status=dead|archive-date=2013-01-11|title=(싱글) ONE 4 U / Daum 뮤직 :: 언제 어디서나 Music on Daum|date=|publisher=Daum Communications|accessdate=2012-06-17|language=Korean}}</ref> The song "Never Let Go", used as B-side for the Korean single, was released on May 15, 2012, two weeks before their official debut, as a prologue single. The song was re-recorded in Japanese and will also serve as their debut single in Japan. It was released on August 8, 2012.

==Background== On May 7, a mysterious video featuring Kara's member Goo Hara was revealed on DSP Media's YouTube account with a male voice on the background. The video created a confusion because it was not revealed if the video was a teaser for an upcoming Korean comeback of Kara, or a teaser for an upcoming solo event of Hara, or something related to A-Jax. On May 10, another video of Hara was released, revealing that the teaser was related to A-Jax. In the teaser, a song of the group (at this time the name was not revealed) was playing at the background. On May 15, DSP Media released the song and music video of the song played on the teaser, called "Never Let Go". On the music video only appears Hara. Later it was stated that the song was only a prologue song. On May 21, it was revealed that A-Jax was set to be the opening act in Kara's last two shows of their first tour, ''Karasia'', in Saitama, Japan. The members stated "''It's an honor to be able to stand on such a big stage before our debut. It'll be a learning experience for us. As it is a great opportunity, we're going to work to show as much of our charm as possible.''"<ref>{{cite web|url=http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&sid1=106&oid=014&aid=0002652206 |script-title=ko:에이젝스, 카라 오프닝 무대 통해 '3만2천 관객앞에 선다' |date=2012-05-21|publisher=Naver|accessdate=2012-06-17|language=Korean}}</ref> On May 1, it was revealed that the group will be debuting in South Korea and Japan simultaneously in 2012. It was also revealed by DSP that "''A-Jax will be the first Korean idol group to debut within Korea and Japan simultaneously, and will follow in the footsteps of the group SS501. A-Jax has signed under the equivalent conditions that other Korean male idol groups, who have already established their popularity, have been given, making it an unprecedented event. Thus, they are receiving much attention from Japanese music industry insiders.''" For their Japanese releases, they signed with the label Universal Sigma, where their labelmates Kara and Rainbow are currently signed.<ref>{{cite web|url=http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&sid1=106&oid=096&aid=0000174425 |title=DSP보이즈 에이젝스, 韓日 동시데뷔 'SS501 뒤 잇는다' |date=2012-05-01|publisher=Naver|accessdate=2012-06-17|language=Korean}}</ref>

On May 28, DSP Media released, on A-Jax's YouTube account, a teaser of the music video for their official debut song "One 4 U". The full single of "One 4 U" were released on June 1.<ref name=one4u /> The song is also known for being the opening and ending theme song of MBC Music's reality show ''Making the Star - DSP Boyz''.

==Composition== "One 4 U" and "Never Let Go" were written and produced by the multi-platinum Korean-American music producer, songwriter, and multi-instrumentalist Steven Lee. He also produced the song "So Cool" and made additional engineering on the song "To Me", of their labelmate Rainbow. He also produced songs of the group SS501 and its members Heo Young-saeng and Kim Hyun-joong.<ref name=one4u />

==Music video==

===Never Let Go=== Two teasers of the music video for "Never Let Go" were released, the first being released on May 7<ref>{{cite web|url=https://www.youtube.com/watch?v=6Dz25HZ7E-A|title=HARA 'Short Movie' Teaser 1 - YouTube (A-Jax's "Never Let Go" first teaser) |date=2012-05-07|publisher=DSP Media's YouTube account|accessdate=2012-06-17}}</ref> and the second being released on May 10, all on DSP Media's YouTube account.<ref>{{cite web|url=https://www.youtube.com/watch?v=Ffv1X_dYDUI|title=HARA 'Short Movie' Teaser 2 (Song by.A-JAX) - YouTube (A-Jax's "Never Let Go" second teaser) |date=2012-05-07|publisher=DSP Media's YouTube account|accessdate=2012-06-17}}</ref> The full music video was released on May 15, on A-Jax's YouTube account, along with the release of the song digitally.<ref>{{cite web|url=https://www.youtube.com/watch?v=O_XBL6sQffA|title=A-JAX(에이젝스) - 너 밖에 몰라서(Never Let Go) Music Video - YouTube |date=2012-05-14 <!-- (GMT +0) --> |publisher=A-Jax's YouTube account|accessdate=2012-06-17}}</ref> The music video is starred by Kara's member Goo Hara and A-Jax's members does not appears.<ref>{{cite web|url=http://isplus.live.joinsmsn.com/news/article/article.asp?total_id=8394240&cloc= |archive-url=https://archive.today/20130103124827/http://isplus.live.joinsmsn.com/news/article/article.asp?total_id=8394240&cloc= |url-status=usurped |archive-date=January 3, 2013 |script-title=ko:구하라, 뮤비 속 아찔 시스루룩 알고보니 ‘콜렉션 작품’ |date=2012-06-07|publisher=MSN Korea|accessdate=2012-06-17|language=Korean}}</ref>

===One 4 U=== A teaser of the music video for "One 4 U" was released on May 29, on A-Jax's YouTube account.<ref>{{cite web|url=https://www.youtube.com/watch?v=r9Y5-M0kWLU|title=A-JAX(에이젝스) - ONE 4 U (원포유) M/V Teaser |date=2012-05-28 <!-- (GMT +0) --> |publisher=A-Jax's YouTube account|accessdate=2012-06-17}}</ref> The full music video was released on June 1, along with the single release.<ref>{{cite web|url=http://news.nate.com/view/20120601n03240 |title=에이젝스, 'ONE 4 U(원포유)' 뮤비 풀버전 공개… 강렬한 남성미 눈길 |date=2012-06-01|publisher=Nate|accessdate=2012-06-17|language=Korean}}</ref> It was later stated that the music video have cost $42,500 USD only with Computer graphics effects.<ref>{{cite web|url=http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&sid1=106&oid=014&aid=0002657839 |title=에이젝스, CG에만 5천만원 투입..대작 뮤비 탄생 예고 |date=2012-05-30|publisher=Naver|accessdate=2012-06-17|language=Korean}}</ref><ref>{{cite web|url=http://news.nate.com/view/20120530n11154 |title=에이젝스, '원포유' 뮤비 CG제작에만 5000만 원 투입 |date=2012-05-30|publisher=Nate|accessdate=2012-06-17|language=Korean}}</ref>

==Promotions== The Korean promotions of the song "One 4 U" started on June 2, on MBC's ''Show! Music Core''.<ref>{{cite web|url=https://www.youtube.com/watch?v=ghKA8VWiYJg |title=음악중심 : A-Jax - ONE 4 U, 에이젝스 - 원 포 유, Music Core 20120602 - YouTube |date=2012-06-02|publisher=MBC's K-pop YouTube account|accessdate=2012-06-13|language=Korean}}</ref> The group is also promoting on the shows ''Inkigayo'', ''M! Countdown'' and ''Show Champion''. The song "Never Let Go" was used for the debut week performances.<ref>{{cite web|url=https://www.youtube.com/watch?v=SdUxCJslT1I|title=음악중심 : A-Jax - Never Let Go, 에이젝스 - 너밖에 몰라서, Music Core 20120602 - YouTube|date=2012-06-02|publisher=MBC's K-pop YouTube account|language=Korean|accessdate=2012-06-17}}</ref> Due to a problem with the choreography, the group decided to change it on its second week of promotions. The choreography, called 'back down' dance, is falling on your back from an upright position while keeping your body straight without any safety devices. This part of the choreography was hurting the members' back.<ref>{{cite web|url=http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&sid1=106&oid=076&aid=0002221111 |script-title=ko:에이젝스, 고난이도 안무 '백 다운' 계속 해야 하나 고민|date=2012-06-04|publisher=Naver|accessdate=2012-06-17|language=Korean}}</ref> The promotions of the song ended on July 1 and will be followed by "Hot Game".

==Track listing== {{track listing | total_length = 16:54 | headline = Korean single<ref name=itunes>{{cite web|url=https://itunes.apple.com/us/album/one-4-u-ep/id533051543 |archive-url=https://web.archive.org/web/20130625202323/https://itunes.apple.com/us/album/one-4-u-ep/id533051543 |url-status=dead |archive-date=June 25, 2013 |title=iTunes - Music - One 4 U - EP by Ajax|date=2012-06-01|publisher=iTunes Store|accessdate=2012-06-17}}</ref> | all_writing = Steven Lee<!-- 이승재 is Steven Lee's Korean name. --> | extra_column = | title1 = One 4 U | note1 = 원포유; ''Wonpoyu'' | length1 = 3:57 | title2 = Never Let Go | note2 = 너밖에 몰라서; ''Neobakke Mollaseo'' | length2 = 4:31 | title3 = One 4 U | note3 = Instrumental | length3 = 3:57 | title4 = Never Let Go | note4 = Instrumental | length4 = 4:31 }}

==Chart performance== "Never Let Go" debuted at position number 164 on Gaon Chart, in the week of May 25, with 1,441,047 points. "One 4 U" debuted at position number 167, in the week of June 7, with 1,173,982 points.

===Never Let Go=== {| class="wikitable sortable" !Chart !Peak<br/>position |- |''Gaon'' Weekly singles chart<ref name=gaon>{{cite web|url=http://www.gaonchart.co.kr/main/section/search/list.gaon?Search_str=A-JAX|title=Gaon Search - A-JAX|date=|publisher=Gaon|accessdate=2012-06-17|language=Korean}}</ref> |align="center"|164 |- |''Gaon'' Weekly Domestic singles chart<ref name=gaon /> |align="center"|155 |}

===One 4 U=== {| class="wikitable sortable" !Chart !Peak<br/>position |- |''Gaon'' Weekly singles chart<ref name=gaon /> |align="center"|167 |- |''Gaon'' Weekly Domestic singles chart<ref name=gaon /> |align="center"|152 |}

==Japanese version== {{Infobox song | name = One 4 U"<br/>"ワン・フォー・ユー | cover = One4u-jpsingle.jpeg | alt = | caption = Regular edition cover | type = single | artist = A-Jax | album = | B-side = Break Up | released = August 8, 2012 | recorded = 2012 | studio = | venue = | genre = J-pop, Rock | length = 04:00 | label = Universal Sigma | writer = Steven Lee | producer = Steven Lee | chronology = A-Jax Japanese | prev_title = | prev_year = | next_title = Hot Game | next_year = 2012 }}

A Japanese version of the song was also used as the group's debut single in Japan. It was released on August 8, 2012 in five editions: CD+DVD,<ref name=cddvd /> CD+Photobook,<ref name=cdphotobook /> two CD only editions, first press with a bonus track and a standard regular edition<ref name=cdonly /> and a Premium Box edition.<ref name=premiumbox />

===Background=== On June 19, Universal Sigma announced that "One 4 U" was re-recorded in Japanese and will be released as their debut single in Japan. The single will be released on August 8, 2012 in five different editions: Premium Box, CD+DVD, CD + Photobook, CD Only + Bonus track and a Regular edition. The bonus track included is a cover of the song "Crazy 4 U", originally sung by the group SS501, released on the group's fifth Korean mini album ''Destination''.<ref>{{cite web|url=http://universal-music.co.jp/a-jax/news/2012/06/20120619topics |script-title=ja:ボーイズグループの大本命がついに日韓同時デビュー! |date=2012-06-19 <!-- (GMT +9) --> |publisher=Universal Music Japan|accessdate=2012-06-18|language=Japanese}}</ref> It was also announced that the group will make a Handshake event commemorating the release of the single. It will be held in Tokyo on August 8, Osaka on August 10, Nagoya on August 11 and in Fukuoka on August 12.<ref>{{cite web|url=http://universal-music.co.jp/a-jax/news/2012/06/20120619live |title=「ワン・フォー・ユー -ONE 4 U-」発売記念「握手会決定!」 |date=2012-06-19 <!-- (GMT +9) --> |publisher=Universal Music Japan|accessdate=2012-06-18|language=Japanese}}</ref> On July 23, Universal Music announced a special Premium Box of the single, featuring all editions of the single and a special DVD with the special showcase realized on July 11, 2012 in Stellar Ball.<ref name=premiumbox>{{cite web|url=http://store.universal-music.co.jp/fs/artist/a-jax/pdcs1001 |title=A-JAX / ワン・フォー・ユー -ONE 4 U- PREMIUM BOX【CD Maxi】【+DVD】【BOXセット】【2012年8月8日発売】 / UNIVERSAL 韓国 STORE / UNIVERSAL MUSIC STORE|date=2012-07-23|publisher=Universal Music Japan|accessdate=2012-07-23|language=Japanese}}</ref>

===Composition=== The Japanese version of the song, like the Korean version, was composed by Steven Lee and written by Jam-9 and Yū Shimoji. The b-side "Break Up" was written by Kenn Kato and composed by Kim Won-hyun, Shim Man-joo. The first press edition of the single include a cover of the song "Crazy 4 U", originally sung by the boyband SS501.

===Music video=== The Japanese version of the music video premiered on the network ''Space Shower TV'' on July 6, 2012. A short version of the music video was uploaded on Universal Music Japan's YouTube account on July 10, 2012. The music video mixes the Japanese version of "One 4 U" with some scenes of Goo Hara from the music video of "Never Let Go".

===Track listing=== {{track listing | total_length = 14:41 | headline = Limited and Standard CD only edition track list<ref name=cdphotobook>{{cite web|url=http://store.universal-music.co.jp/fs/artist/umck9551 |title=A-JAX / ワン・フォー・ユー -ONE 4 U-【初回限定盤B】【CD Maxi】【+写真集】【2012年8月8日発売】 / UNIVERSAL 韓国 STORE / UNIVERSAL MUSIC STORE|date=2012-06-19|publisher=Universal Music Japan|accessdate=2012-06-19|language=Japanese}}</ref> | all_writing = | extra_column = | title1 = One 4 U | note1 = ワン・フォー・ユー; ''Wan Fō Yū'') (Japanese version | lyrics1 = Jam-9, Yu Shimoji | music1 = Steven Lee | length1 = 4:00 | title2 = Break Up | note2 = | lyrics2 = Kenn Kato | music2 = Kim Won-hyun, Shim Man-joo | length2 = 3:22 | title3 = One 4 U | note3 = Instrumental | music3 = Steven Lee | length3 = 3:59 | title4 = Break Up | note4 = Instrumental | music4 = Kim Won-hyun, Shim Man-joo | length4 = 3:23 }} {{track listing | total_length = | headline = CD Only first press bonus track<ref name=cdonly>{{cite web|url=http://store.universal-music.co.jp/fs/artist/a-jax/umck9552 |title=A-JAX / ワン・フォー・ユー -ONE 4 U-【初回限定盤C】【CD Maxi】【2012年8月8日発売】 / UNIVERSAL 韓国 STORE / UNIVERSAL MUSIC STORE|date=2012-06-19|publisher=Universal Music Japan|accessdate=2012-06-19|language=Japanese}}</ref> | all_writing = | extra_column = | title5 = Crazy 4 U | note5 = SS501 cover | length5 = }} {{track listing | total_length = | headline = Premium Box DVD: <small>A-JAX SPECIAL SHOWCASE @ Stellar Ball 2012.7.11</small><ref name=premiumbox /> | all_writing = | extra_column = | title1 = One 4 U | note1 = | title2 = Never Let Go | note2 = | title3 = Hot Game | note3 = | title4 = Backstage Off-shot movie | note4 = }} {{track listing | total_length = | headline = DVD <small>(Limited edition Type A)</small><ref name=cddvd>{{cite web|url=http://store.universal-music.co.jp/fs/artist/a-jax/umck9550 |title=A-JAX / ワン・フォー・ユー -ONE 4 U-【初回限定盤A】【CD Maxi】【+DVD】【2012年8月8日発売】 / UNIVERSAL 韓国 STORE / UNIVERSAL MUSIC STORE|date=2012-06-19|publisher=Universal Music Japan|accessdate=2012-06-19|language=Japanese}}</ref> | all_writing = | extra_column = | title1 = One 4 U | note1 = Music video - Japanese version | title2 = One 4 U | note2 = Photography Off-shot movie }}

===Chart performance===

====Oricon==== {| class="wikitable" style="width:630px;" |- ! style="text-align:center;"|Released ! style="text-align:center;"|Oricon Chart ! style="text-align:center;"|Peak ! style="text-align:center;"|Debut Sales ! style="text-align:center;"|Sales Total ! style="text-align:center;"|Chart Run |- | style="text-align:center;" rowspan="3"|August 8, 2012 |align="left"|Daily Singles Chart | style="text-align:center;"|21 | style="text-align:center;" rowspan="2"|4,030 <small>(Weekly)</small> | style="text-align:center;" rowspan="3"|4,030 | style="text-align:center;" rowspan="3"|1 week |- |align="left"|Weekly Singles Chart | style="text-align:center;"|29 |- |align="left"|Monthly Singles Chart | style="text-align:center;"|— | style="text-align:center;" rowspan="1"|— |}

====Other charts==== {| class="wikitable sortable" style="text-align:center;" ! Chart ! Peak<br>position |- | align="left" | ''Billboard'' ''Japan'' Hot 100<ref name=hot100>{{cite web|url=http://www.billboard-japan.com/charts/detail?a=hot100&year=2012&month=08&day=20|title=Japan Hot 100 / Billboard JAPAN (Billboard Japan Hot 100 for August 20th)|date=2012-08-15|publisher=Billboard|accessdate=2012-08-15|language=Japanese}}</ref> | 86 |- | align="left" | ''Billboard Japan'' Hot Singles sales<ref name=hotsales>{{cite web|url=http://www.billboard-japan.com/charts/detail?a=sales&year=2012&month=08&day=20|title=Billboard Japan Hot Singles Sales / Billboard JAPAN (Billboard Japan Hot Singles Sales for August 20th)|date=2012-08-15|publisher=Billboard|accessdate=2012-08-15|language=Japanese}}</ref> | 35 |}

==Release history== {| class="wikitable plainrowheaders" |- ! scope="col"| Country !! Date !! Format !! Label |- ! scope="row" rowspan="2"| South Korea ! scope="row" rowspan="1"| May 15, 2012 - June 1, 2012 ! scope="row" rowspan="1"| Digital download <small>(Never Let Go only)</small> | rowspan="3"| DSP Media |- ! scope="row" rowspan="2"| June 1, 2012 ! scope="row" rowspan="2"| Digital download<br/><small>(Korean single)</small> |- ! scope="row" rowspan="1"| Worldwide<ref name=itunes /> |- ! scope="row" rowspan="2"| Japan ! scope="row" rowspan="1"| August 1, 2012 ! scope="row" rowspan="1"| Digital download <small>(One 4 U only)</small><ref name=one4uitunesjp>{{cite web|url=https://music.apple.com/jp/album/one-4-u-single/545629512 |title=iTunes - ミュージック - A-JAX「ワン・フォー・ユー -ONE 4 U- - Single」|date=2012-08-01|publisher=iTunes Store|access-date=2012-08-07|language=Japanese}}</ref> | rowspan="2"| Universal Sigma |- ! scope="row" rowspan="1"| August 8, 2012 ! scope="row" rowspan="1"| CD single, Digital download<br/><small>(Full Japanese single)</small><ref name=one4uitunesjpep>{{cite web|url=https://music.apple.com/jp/album/one-4-u-ep/544726348 |title=iTunes - ミュージック - A-JAX「ワン・フォー・ユー -ONE 4 U- - EP」|date=2012-08-08|publisher=iTunes Store|access-date=2012-08-07|language=Japanese}}</ref> |}

==References== {{reflist}}

==External links== * {{YouTube|id=M5LtlBuS3H4|title="''One 4 U''" (Korean) Music video}} * {{YouTube|id=CRt_jsmhPJ0|title="''One 4 U''" (Japanese) Music video - Short version}}

Category:Songs in Korean Category:Songs in Japanese Category:2012 debut singles Category:2012 songs Category:Songs written by Steven Lee (music producer) Category:South Korean rock songs