발자국 – 어머니 (with 임희근)
Track 01 from Single "어머니 (with 임희근)"
Release Date: 2021.04.02
발자국 – 어른이의 꿈 (with 김욱헌, Figaro)
Track 01 from Single "어른이의 꿈 (with 김욱헌, Figaro)"
Release Date: 2019.05.20
발자국 – 바람아리랑 (with 김욱헌, 신윤수, 최은지)
Track 01 from Single "바람아리랑 (with 김욱헌, 신윤수, 최은지)"
Release Date: 2020.12.10
발자국 – walk with you (with 한혜란)
Track 01 from Single "Walk with you (with 한혜란)"
Release Date: 2019.05.20
발자국 – 난 걷는다 (with 변준우)
Track 01 from Single "난 걷는다 (with 변준우)"
Release Date: 2019.05.20
발자국 – 그 빛 (with 최은지 크리스티나)-발자국
Track 01 from Single "그 빛 (with 최은지 크리스티나)"
Release Date: 2021.07.30