Koo Chang Mo, known simply as Changmo, is a South Korean rapper and producer. He graduated from Deokso High School and he always wanted to become a professional rapper.

In 2014, he participated in "Show Me The Money 3" and later debuted with the single "Gangster". He's been a part of The Quiett and Dok2's sub-label Ambition Musik since 2016. He later appeared on "Show Me The Money Season 7" but, this time, as a part of producing team Illinonaire Ambition with The Quiett.

In 2021, he appeared as a producer on "High School Rapper 4" and has featured in songs of fellow rappers inno, Lee Young Ji, and others. He enlisted for his mandatory military service on March 14, 2022 and got discharged on September 13, 2023.

(Source: Korean = NamuWiki || Translation = MyDramaList) Edit Biography