Hyun has been involved with music since he was a child; his father Ho byong chan [ko], was a jazz pianist who was the first person to create a jazz big band called AAA(Triple A) inside the 8th US army village.

[1] Though album sales were mediocre, he gained popularity as a forerunner of hip hop music in South Korea, which at the time was a shock for most audiences.

[3] At first, Wawa consisted of Koo Jun-yup and Kang Won-rae from Clon, later Lee Hyun-do and Kim Sung-jae, both of Deux fame,[6] and finally Sean, a future half of Jinusean.

Hyun's career was damaged by a series of drug convictions from which it never fully recovered.

Hyun later said he became addicted to methamphetamines after befriending a drug dealer inmate during his first stint in jail.

[10] The following year, he began teaching at RAUM, a professional music academy in Gangnam.