Both Chan-hyuk and his younger sister, Lee Su-hyun, moved to Mongolia with their missionary parents for five years, while being home-schooled by their mother, before returning to South Korea.

The sibling duo finished in first place, later choosing to sign under YG Entertainment as they were the only label from the three to provide them the creative freedom they wished for throughout the show, believing their artistry would not be restricted or altered.

[2] On April 7, 2014, Chan-hyuk and Su-hyun officially debuted as AKMU (Akdong Musician) with their studio album Play, instantly becoming a commercial success.

In September 2017, Lee enlisted in the Korean Marine Corps for his mandatory military service, thus temporarily halting all AKMU activities until his return.

[6] On September 26, 2019, Lee published his first novel Fish Meets Water (물 만난 물고기), a day after AKMU's album Sailing was released.