Kim Nam Joo – 끝에, 우리 (Last trip) (The stairway of Time X Kim Nam Joo)

June 10, 2021

Kim Nam Joo – Bird

September 7, 2020

Kim Nam Joo, RAVI, Kang Seung Sik – 그 여름 (Summer Memories) (From COOL SUMMER PROJECT)

August 14, 2020

NIEL, Kim Nam Joo (Apink), Nam Dohyon – 운명 (Destiny) (COOL Remake)

July 31, 2020