싱크로니시티 (Synchronicity) – 무슨 말이라도 해봐 (Feat. 홍가)
Track 01 from Single "무슨 말이라도 해봐"
Release Date: 2013.06.26
싱크로니시티 (Synchronicity) – 너와 함께
Track 01 from Single "너와 함께"
Release Date: 2017.08.25
싱크로니시티 (Synchronicity) – 니가 없이도 난 잘 지내
Track 01 from Single "니가 없이도 난 잘 지내"
Release Date: 2021.07.14
싱크로니시티 (Synchronicity) – 아직, 이별
Track 01 from Single "아직, 이별"
Release Date: 2019.06.13
싱크로니시티 (Synchronicity) – 너에게 부르는 노래 (My Wedding Day)
Track 01 from Single "너에게 부르는 노래 (My Wedding Day)"
Release Date: 2020.05.12
싱크로니시티 (Synchronicity) – 희망사항 (Feat. 주대건 Of 페노메논)
Track 01 from Single "희망사항"
Release Date: 2016.01.27