Ha Hyun-woo (born November 25, 1981) is a South Korean singer-song writer. He is the lead vocal and guitarist of the rock band Guckkasten. Early life On November 25, 1981, Ha Hyun-woo was born in Jangsu, North Jeolla Province. He moved to Ansan, Gyeonggi Province at around 7 and spent his elementary, middle and high school days. He was very introspective until middle school. Thanks to that, he didn't have to make a lot of sound during puberty, and this helped him make high-pitched sound presently.