2012–present: Jannabi In 2012, Jannabi was formed under an independent record label, Peponi Music, established and headed by Choi's older brother, Choi Jung-jun. The band started from scratch, performing on clubs and
busking on the streets of
Hongdae and
Insa-dong. In August 2013, Jannabi auditioned for the fifth season of the survival audition show
Superstar K to make their band known. While Kim and Yoo Young-hyun were eliminated, Choi continued to participate as a member of the newly created vocalist group Plan B. Plan B was later eliminated, reaching the Top 7 Qualifying Round. On April 28, 2014, Choi officially made his debut as a member of Jannabi with the release of the single
Rocket. In the same year, the band has continued to release digital
singles November Rain and
Pole Dance, its first
extended play (EP),
See Your Eyes, and several original sound tracks for
Korean television dramas. On August 4, 2016, Jannabi released its first studio album,
Monkey Hotel. In 2019, Jannabi created an unprecedented sensation after releasing their second studio album
Legend with the title track "For Lovers Who Hesitate," which reached number one on the
Circle Digital Chart in May 2025 and continues to appear on the music charts in South Korea to this day with a
triple platinum for streaming certification by the
Korea Music Content Association. Aside from all the other songs in the album charting, their previously released songs simultaneously charted on the Circle Digital Chart and Billboard
K-Pop Hot 100. On July 18, 2021, despite Kim and Jang being on a hiatus due to military service, Choi continued to promote the band with session musicians, releasing their third studio album,
The Land of Fantasy. On May 10, 2022, Choi released Jannabi's third EP, ''
Jannabi's Small Pieces II: Grippin'TheGreen'', with all tracks written and produced by him. He revealed that the album was filled with "songs made at home, in the afternoon, mostly while looking out the window," with Choi hoping that listeners would listen to the EP like that as well. The EP's lead single "Grippin'TheGreen," ranked first on the
Bugs! and quickly entered the Top 100 of the
Genie and
Melon music charts.
2018–present: Solo activities Festival in May 2024 In 2018, Choi participated in the song "Lilac" from
Changmo's EP
The Moment of Contact. In December 2018, Choi competed on
King of Mask Singer under the name "Ginger Man," appearing in episodes 183 and 184. In 2019, following Jannabi's rise to fame, Choi appeared on various television shows, including KBS'
In Sync, where vocalists try to find their perfect match to do a duet, the social commentary talk show
Hello Counselor, and MBC's
I Live Alone, where he particularly gained attention by revealing his daily life. In 2020, Choi participated in the 28th anniversary project of the fashion magazine
Elle Korea called "RECONNECT." It features the song "For the Gone," written and composed by him alongside
Code Kunst and
Simon Dominic. In 2021, Choi appeared on
Hangout with Yoo. In July, he participated in the song "
Next Episode" from
AKMU's EP of the same title. In October, he participated in the 25th anniversary tribute for punk rock band
No Brain by remaking their song "Midnight Music," a track from No Brain's 5th album
That is Youth (2007). In 2022, it was announced that Choi would join
JTBC's music entertainment show
Hot Singers as a music director alongside Kim Moon-jeong. The show centers on the journey of Korea's famous senior actors in singing songs together while telling the stories of their lives. He created the Korean language version of the song "
This Is Me" which was performed by the choir at the
58th Baeksang Arts Awards to conclude the show. From April to May, he led a
film photo exhibition called "Days of Future Passed" in collaboration with Allycamera. The exhibition follows Choi's daily life from morning to night, showcasing his point of view and his brother's photographic works. In May, he joined the two-track project of singer-songwriter Jo Dong-hee and composer Jo Dong-Ik by singing the song "Until I love the love." The song has an exquisite blend of understated acoustic melodies and electronic sounds that lead to a calm atmosphere. On September 23, Choi appeared as an original singer on the seventh season of
Hidden Singer. The show's sixth episode introduced Jannabi as "the first place in festival recruitment." The episode ranked first in the same time slot, and Choi took sixth place in the overall ranking of entertainment performers. On September 26, a song collaboration "Because We Loved" with
Kang Min-kyung was released, ranking first on various music charts such as Bugs! and Genie. In 2023, Choi became an official member of the
Korea Music Copyright Association. In March, Choi starred on SBS' variety show
No Math School Trip, directed by
Running Man's former director, Choi Bo Pil, alongside
Doh Kyung-soo,
Zico,
Crush,
Yang Se-chan, and
Lee Yong-jin. From May to August, Choi hosted the second season of KBS late-night music talk show ''
The Seasons: Choi Jung-hoon's Night Park''. Choi received the Excellence Award in Show and Variety Category at the
2023 KBS Entertainment Awards for this. == Artistry ==