On June 12, the rapper wrote via social media, "The lyrics I wrote years back seem to be leaving many wounded. It is due to the fact that I was young and immature back then. I am deeply repenting at the moment."

The song "Dope Man", released in 2013, includes lyrics about a woman being sexually harassed with phrases like "Your rap clothes are from the Daegu disaster," alarming listeners.

Changmo explained in the apology letter, "The lyrics I had written back then were written in my early 20s when I was still an amateur. Afterward, I had realized my faults and even posted a statement of apology. Many have reprimanded me as a result, and I too am deeply reflecting on my hasty actions."

He expressed, "Furthermore, I would like to sincerely apologize once again to everyone who has been hurt by the lyrics. I will do my best to learn from this experience."

Prior to this, Changmo also apologized for the demeaning lyrics at the time of the 'Sewol Ferry' tragedy in 2014.

Meanwhile, the rapper received attention in the hip-hop/R&B scene for his song "Maestro" released last year, leading him to collaborate with fellow artists like Suran and Hyorin.