히키 (Hickee) – 사랑에 연습이 있었다면 (답가)
Release Date: 2019.06.02
히키 (Hickee) – 더 게임 : 0시를 향하여 OST Part.2
Release Date: 2020.02.05
히키 (Hickee) – 불면증
Release Date: 2019.04.07
히키 (Hickee) – Cry Me A River
Release Date: 2018.03.08
히키 (Hickee) – 하나뿐인 내편 OST Part.10
Release Date: 2018.11.11
히키 (Hickee) – 너무나 흔해버린 말들이
Release Date: 2019.10.25
히키 (Hickee) – Love Chat
Release Date: 2018.10.21
히키 (Hickee) – Wizard
Release Date: 2020.08.10
히키 (Hickee) – 향 (Fragrance)
Release Date: 2018.07.08
Various Artists – 쇼윈도 : 여왕의 집 OST
Release Date: 2022.01.17
히키 (Hickee) – 쇼윈도 : 여왕의 집 Vol.1
Release Date: 2021.11.29