Korean version

Kenzie, a songwriter who previously composed the group's debut single "Into the New World", also composed "Oh!".^[8] It was released to digital music sites on January 25, 2010. The song quickly topped various digital music charts within 10 minutes of release.^[2] Moreover, the song reached #1 on Gaon Music Chart.^[9]

Japanese version

On August 10, 2012, it was announced the group was to release their next Japanese single after the success of their previous single "Paparazzi", in the following month on September 26, 2012. The single was announced with no confirmation of title tracks, however fans were allowed to pre-order the regular, and limited editions of the single.^[10] After several weeks of speculation, the single's title track, a Japanese remake of the group's popular 2010 Korean hit, "Oh!" was finally announced on September 10.^[6] The accompanying music video to "Oh!" was released on September 14, 2012, along with an exclusive ringtone which was released at 5AM JST.^[7]

Korean version

The group worked with long-time collaborator Rino Nakasone Razalan, whom they had previously worked on for the group's previous single, "Tell Me Your Wish (Genie)" on the choreography for "Oh!", and director Cheo Soo-hyun. A teaser video was released to various websites on January 23, 2010, causing at least one of them – Naver – to be overwhelmed by high visitor traffic.^[11] The full video was released on January 26, 2010.^[12] Eventually, the dance version of "Oh!" was released on S.M. Entertainment's YouTube channel. As of December 2016, the song's official music video has attracted over 100 million views on YouTube, becoming the group's fifth music video to do so following "Gee", "I Got A Boy", "The Boys", and "Mr. Taxi".^[13]

The girls wear specific numbers in the music video; each number was personally chosen by the members. In the story version, it is shown that they were cheerleaders for an American football team. In the middle of the video, Sooyoung mishandles an American football helmet (turns out to be a University of Iowa Hawkeyes football helmet from the Big Ten Conference) causing the computer monitor to be damaged (it was the main highlight of their "Run Devil Run" story video because when the helmet hits the monitor, it causes the Black SoShi to emerge from the monitor). At the end of the video, the girls meet the Black SoShi, their malevolent selves from a parallel universe.^[14]

Japanese version

The Japanese version of "Oh!" was released on September 14, 2012. A dance version for "Oh!" was released on September 18, 2012. The "Oh!" video shares similarities with its Korean counterpart, however, instead of being a High School oriented video, the video is shot as if the girls have now entered College, implying their growth as artists and women. The video begins with the camera panning through their College dorm, all of the members are seen reading, except for Jessica who is playing the Ukulele, Hyoyeon and Seohyun who are playing Rock-paper-scissors. The camera then focuses on a cheerleading jacket with "Girls' Generation" written on it, as well as a football helmet with "GG" written on the side and a decorated cake with "Oh!" written in decorative writing. It then cuts to Tiffany, who says "Go!" and the girls quickly file out into a red-colored changing room where they begin to sing and dance. The video cuts between this and a stadium setting where the group perform as cheerleaders, as well as solo shots of each of the individual members dressed in their cheerleading uniforms. The video ends with the girls entering back into their dorm, taking off their blue cheer jackets. Taeyeon walks towards the camera with her jacket and puts the jacket over it. The final scene is the girls' empty dorm with the camera focusing on a picture on the wall of the group.

Korean version

The song was first performed live on January 30, 2010, on MBC's Music Core, as part of their Comeback Stage.^[22] However, there was a technical error in MBC's broadcast, with 7 seconds of dead air near the end of the performance; the network was subsequently flooded with complaints.^[23] The incident was then parodied on YouTube, mixing in clips of the Korean drama IRIS, receiving attention from Korean netizens.^[24] The group followed up with their second performance on Inkigayo the following day.^[25] On their first Music Bank comeback stage, they won the "K-Chart!", beating CNBLUE and 2AM while at the same time breaking the record for the most points on the chart with 23,077 points.^[26]

Japanese version

The group was set to perform the single for the first time on September 24, 2012, on Fuji TV’s Hey! Hey! Hey! Music Champ, which marked their sixth appearance on the show. The group donned pink cheerleading outfits, with knee high boots for the performance of "Oh!" as well as a special performance of "Mr. Taxi".^[27] The group also participated in a "Special Program" in anticipation of the single's release, with three Japanese music websites airing performances of the single across three consecutive nights; September 25, 26 and 27.^[28] On September 29, the group performed "Oh!" on Count Down TV, dressed in white cheerleading uniforms.^[29] The group pre-recorded a performance for NHK-TV's Music Japan prior to the single's release and was scheduled to be broadcast on September 30, however due to a typhoon, the broadcast was delayed. The performance was shown on October 6, with the group performing in blue cheerleading outfits.^[30] Promotion for the single continued on Nippon Television’s “Music Lovers", where the group recorded a performance on September 25 for the show that was broadcast on October 8, 2012. The group performed "Oh!", "All My Love Is for You" and "Mr. Taxi".^[31]

Studio

Personnel