Under Nineteen (Korean: 언더나인틴) was a survival show on Munhwa Broadcasting Corporation for trainees under the age of 19 years old. There were a total of 57 contestants competing to debut as a member of 1THE9. The trainees were put into groups that specializes in vocals, rapping, and performance. The show aired between November 3, 2018 and February 9, 2019.
Under Nineteen
1the9 was a South Korean boy band formed through the 2018 survival competition Under Nineteen. The group was composed of 9 members: Yoo Yong-ha, Kim Tae-woo, Lee Seung-hwan, Shin Ye-chan, Kim Jun-seo, Jeon Do-yum, Jung Jin-sung, Jeong Taek-hyeon and Park Sung-won. The group's debuting members were announced on February 9, 2019 and was initially slated to be promoting under PocketDol Studio for 12 months. After delays surrounding the COVID-19 pandemic, the group disbanded in August 2020.
1the9 in April 2019 From left to right: Yechan, Sungwon, Junseo, Doyum, Taewoo, Taekhyeon, Jinsung, Seunghwan, and Yongha.