“O”-Jung.Ban.Hap.(stylized as“O”-正.反.合.), sometimes referred to as“O”-Unionor justO, is the third Korean studio album (fourth overall) by South Korean pop group TVXQ, released on September 29, 2006 by S.M. Entertainment. In a year when Korean music sales had slumped, it was the highest selling album inSouth Koreain 2006 and won the group several prominent awards in South Korea.^[1][2]The album stayed charted within the top 50 throughout 2007. By 2014, it sold over 475,000 copies.^{[3][4][5][6][7]}

The album’s name“O”-Jung.Ban.Hap, literally translated to“O”-Justice.Opposition.Solution, is based onGeorg Wilhelm Friedrich Hegel‘s theory of thesis, antithesis, synthesis. The album’s mononymous lead single has lyrics that regard global conflicts with a plea for peace and resistance. The album has a balance of fast tempo songs and ballads.

The album was released in 4 different versions and packaging, versionsAandB,CandD. Versions A and B promote the title song “””O”-正.反.合.”, while versions C and D promote the fantasy theme of the song “Balloons” and contain new songs and aDVDin each. The initial versions of the album with the original track listing was released in CD andcassetteformats.

For the version D, the label company did a unique box packaging, with special deck of cards with members’ pictures wearing costumes included with the CD and DVD specials.

InHong Kongand Taiwan, the album was released under the names“O”-Jing.Fan.Hap.and“O”-Zheng.Fan.He.respectively, while inJapanthe name of the album is“O”-Sei.Han.Go.. The Japanese release does not contain the repackaged versions that are available in the Korean release.

The lead single is a fast-tempo fusion ofrock,hip hop, andelectronic trance. The music video took several days to complete as its footage was shot in several different countries. U-Know Yunho’s footage was shot inJapan, Micky Yoochun’s and Max Changmin’s in Prague, Hero Jaejoong’s in Thailand, and Xiah Junsu’s inSouth Korea. The music video showcases intense and unique dance choreography with stylized outfits.

In drastic contrast to the lead single, “Balloons” (Pungseonin Korean) is a bubbly song that features TVXQ members in animal costumes, made to directly appeal to the younger generation, as well as older generations familiar with the original “Balloons” by Five Fingers (an old Korean band). The lyrics talk about innocent childhood dreams and memories and how people tend to forget the importance of those dreams as they grow older.

In the lyrics, “yellow balloons” line was changed to “red balloons” to coordinate with the colour that represents TVXQ’s fanbase Cassiopeia.

In three short months after the album’s release, TVXQ were invited to perform on many stages of music shows, award shows, and concerts. TVXQ performed their third album’s songs a few times in 2007 as well, since a fourth Korean album had not been released.