[3] Kim is a songwriter who has written numerous number-one songs on the Korean pop music charts.

She has collaborated with Lee Min-soo and has written lyrics for 24K, Son Dam-bi, Shinee, Brown Eyed Girls, IU, VIXX, Exo-CBX, Younha and Sunny Hill.

[4] Since 2015, she has hosted Two Yoo Project Sugar Man, a variety show focused on song production.

Kim's work often straddles the line between typical love songs found in popular music and broader tones of social critique or commentary on the entertainment industry.

[6] On March 8, 2022, Kim donated ₩10 million to the Hope Bridge Disaster Relief Association to help those affected by the massive wildfires that started in Uljin, Gyeongbuk, and also spread to Samcheok, Gangwon.