2008 · 正式出道
Official Debut
2008年9月18日，15歲的李知恩以藝名IU出道（I and You的結合，希望通過音樂與人產生連結），並於M!Countdown演唱出道曲〈迷兒〉。
On 18 September 2008, 15-year-old Lee Ji-eun debuted as IU — I and You — hoping music could connect people, and performed her debut single “Lost Child” on M! Countdown.