"I Know" (Korean: 난 알아요; RR: Nan arayo) is the debut single by South Korean boy group Seo Taiji and Boys from their self-titled debut studio album, released on March 23, 1992. It was written and produced entirely by group leader and musician Seo Taiji. Incorporating a mix of Western influences such as hip-hop, new jack swing, and guitars, the song became a pivotal moment in Korean music history and is often credited for setting the foundation for the modern K-pop industry. It was a major commercial hit domestically, breaking the record for the longest charting song at number-one for 17 consecutive weeks.