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Chaos (Korean: 카오스; stylized as ChAOS) is a 5-membered k-pop boy group that debuted under Winning InSight Entertainment. Debuted in January 6, 2012 with their single '레이서 (She is Coming)', the group consists of Taeyang(leader), Hyunsun, Heejae, Dongmin, and Doohwan. They are dubbed as the "machoidols" prior and during their debut due to their manly appearance and the unusual funky genre that they showcase through their music.

2012-present: Debut, Racer, Kiss Kiss
ChAOS's company, Winning InSight, first announced about their upcoming debut through the release of individual album jacket and music video teasers. The first set of teasers, consisting of Park Taeyang and Hyunsun's individual jacket photos were released on December 28, 2011 while the music video teasers were released two days after. The official music video teaser, however, was not released until January 3. On January 4, Winning InSight released the second and final teaser photo set for the group. The teaser contained the individual photos of the 3 remaining ChAOS members: Doohwan, Heejae and Dongmin.

On January 5, ChAOS revealed their 1st single '그녀가 온다 (She is Coming)' and its music video. Later that day, they made their debut performance through jTBC's Music On Top by performing their promotional track.

5 months after their debut single album promotions ended, Winning InSight started releasing teasers for ChAOS's first comeback. On July 23, the company announced ChAOS's return with a new mini album titled '레이서 (Racer)' along with the release of Park Taeyang's teaser. A day after, ChAOS revealed teaser pictures for Hyunsun and Heejae. Finally, they unleashed the group teaser picture on July 25.

On July 26, ChAOS revealed the music video for 'Racer' along with the rest of the songs in their mini album. They officially held their comeback on Music Bank the day after.

On September 20, the group announced their third appearance in the industry through a 180-degree switch of musical genre with their first digital single 'Kiss Kiss'. The music video was revealed the same day and ChAOS held their comeback stage at Music Bank the day after.

Discography

 * bolded songs on the tracklist indicates title tracks.