On November 25, 1981, Ha Hyun-woo was born in Jangsu, North Jeolla Province.

[1] He moved to Ansan, Gyeonggi Province at around age 7, where he spent his elementary, middle, and high school days.

These experiences are an important and prominent theme in Guckkasten's music world, particularly in the first of their regular albums.

Thanks to his mother who had dreamed of a painter, he was able to learn art when he was in high school, which was quite late.

Ha Hyun-woo met the drummer Lee Jeong-gil in Daejeon, 2000, and they made the band a year after, within the other members.

[8] However, due to military enlistment issues, the band did not last very long and with the end of the Samzi Festival stage, the team was disbanded.

They held their first solo concert on February 21, 2009, in Seoul, South Korea, at Hongik University's V-Hall.

In 2016, Ha achieved the record of all-time longest-winning contestant of King of Mask Singer, serving as reigning king of the 22nd to 30th generations (equivalent to 18 consecutive broadcast weeks), as the "Music Commander in Town".

As of 2024, his record has not been broken, but has been tied by Yun Min of TOUCHED, who served as king of the 215th to 223rd generations.