[1] Besides his contributions to Stray Kids, Changbin participated as a contestant in Show Me the Money 9 and has collaborated with various artists, including Yoon Ji-sung, Thai rappers F.Hero and Milli, and the girl group Itzy.

[7] Throughout the show, he demonstrated his rapping and music composition skills, with several of his written songs included in the pre-debut EP Mixtape.

[17][18] In February 2023, Changbin, along with his fellow 3Racha members Bang Chan and Han, was promoted to regular membership in KOMCA and, as of November 2024, has credits for 175 songs.

[19][20] On October 15, 2024, Changbin was featured on the song "VAY" from Itzy's ninth EP Gold, for which he also wrote the lyrics and composed the music.

[25][26] On February 5, 2024, he featured in the release of another promotional single, Kim Chang-wan's "8th grader (Respect your dreams)", for Samsung Galaxy S24.