Lee Chan Hyuk (이찬혁) is a South Korean singer-songwriter under YG Entertainment. He is the main rapper, composer, and lead vocalist of the sibling duo Akdong Musician.
Chan Hyuk and his younger sister, Lee Soo Hyun, were born in South Korea. When he was in elementary school, their father’s missionary work caused the family to move to Mongolia. Due to his parent’s financial difficulties, his parents suggested they be home-schooled.
He started singing, dancing, and playing guitar as a way to pass time, as he could not hang out with friends. During his rebellion phase, he focused more on composing songs. Between middle school and high school, his family moved back to South Korea and they started attending regular schooling. He and his sister began busking and auditioning for agencies to help their family financially.
In 2013, the siblings auditioned for K-Pop Star 2 as Akdong Musician and won, selecting YG Entertainment as their agency. In April 2014, they made their debut performance on K-Pop Star 3 with “Melted” and “200%”.
Chan Hyuk enlisted in the Marine Corps on September 18, 2017 to gain valuable life experience like his friends and for inspiration in songwriting.
Source: kpop wiki