On 8 September 2006, Li Yin released her first single, "Timeless". On the first day of release, she ranked #2 on the online charts of SBS Inkigayo. The song was placed #1 on Daum's Music Video chart as well as hitting the highest search number on the famous Korean search engine Naver. The PV was ranked #1 on Melon's Video Chart for 30 days .