Seo Taiji and Boys
Hyun-joon released a song titled 'Lion's Roar' in 2005 which lyrically describes his hardship and determination for dance. He steadily gained popularity in Korea during this time and performed at the 2006 FIFA World Cup. He is involved in a dance group called Nam Hyun-joon and Kids, which is a play on the name Seo Taiji and Boys.