The Pulse of K-Entertainment

X1
GroupSwing Entertainment

X1

X1 (엑스원) remains one of K-pop's clearest examples of how quickly survival-show momentum can turn into real market force. Built through Produce X 101, the 11-member group debuted on August 27, 2019 with Emergency: Quantum Leap and the single Flash, then immediately moved at a scale most rookie groups spend years chasing.

The lineup put future standouts on one stage at once, including Kim Yo-han and Cha Jun-ho, which helps explain why the group still carries weight in fan memory despite its short run. X1 sold fast, charted fast, and looked built for a long runway before the wider Produce vote-manipulation scandal made that impossible.

X1 formally ended on January 6, 2020, but the page still matters because the group captures a specific kind of fourth-generation inflection point: major-label polish, instant fandom scale, and a debut cycle cut off before it could settle into a second act. That tension is why Flash and Emergency: Quantum Leap still read like the opening chapter of something much larger.

2 articles3 creditsDebut: August 27, 2019South Korean

Members

JunhoVocalist
SeungyounMain Rapper, Vocalist
SeungwooLeader, Main Vocalist
MinheeVocalist
WooseokLead Vocalist, Visual
Yohan
YohanCenter, Lead Dancer
EunsangVocalist
HangyulMain Dancer, Rapper
DohyonMain Rapper, Maknae
DongpyoLead Vocalist
HyeongjunLead Dancer

Gallery

Discography

2019
비상: QUANTUM LEAPMini Album
Group
2019
FlashSingle
Group

Filmography

2019
Produce X 101Variety Show
Group

Fans Also Ask

Who were the members of X1?
X1's 11-member lineup was Han Seung-woo, Cho Seung-youn, Kim Woo-seok, Kim Yo-han, Lee Han-gyul, Cha Jun-ho, Son Dong-pyo, Kang Min-hee, Lee Eun-sang, Song Hyeong-jun, and Nam Do-hyon. The group was assembled through Mnet's Produce X 101 and debuted with immediate commercial impact in 2019.
When did X1 debut?
X1 debuted on August 27, 2019 with the mini album <em>Emergency: Quantum Leap</em>. The release was led by <em>Flash</em>, a sharply produced debut single that quickly established the group as one of the biggest survival-show launches of its generation.
Why did X1 disband?
X1 disbanded on January 6, 2020 after the Produce X 101 vote-manipulation scandal made long-term promotions commercially and politically untenable. The members returned to their original companies after only a few months of activity, which is why the group remains one of K-pop's most discussed short-lived acts.
What is X1's best-known song?
X1 are best known for <em>Flash</em>, the lead single from <em>Emergency: Quantum Leap</em>. Even with the group's short lifespan, the track became the defining document of the X1 era because it captured the polished performance style and sky-high expectations built through Produce X 101.
Which survival show created X1?
X1 was formed through Mnet's <em>Produce X 101</em>, the fourth Korean season in the Produce franchise. The show aired in 2019 and ended with an 11-member lineup, but the later vote-rigging investigation permanently shaped how the group was remembered and cut its promotion cycle short.

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