姜鎬童
In 2018, Hong released a retro trot style digital single, "Good Bye" (잘가라), composed by her long-time collaborator Jo Young-soo (who also composed “Love Battery” and “Cheer Up”) and well-known K-pop lyricist Kim Eana. She wrote and composed a second electrot single "I Kicked My Luck Off" (복을 발로 차버렸어) for Kang Ho-dong, which was released through SM Station. In December 2018, Hong released a trot single about people and experiences in Seoul, entitled "Seoul" (서울사람), a collaboration with rapper Bray (브레이) which she produced with Park Keun-tae (박근태).