성아 (SUNG-AH) – 느린 우주선 (SLOW SPACESHIP)
Release Date: 2022.10.18
성아 (SUNG-AH) – 헬로우 (Hello)
Release Date: 2018.08.18
성아 (SUNG-AH) – 불편해 (Uncomfortable)
Release Date: 2018.07.09
성아 (SUNG-AH) – I’ll Set You Free
Release Date: 2020.02.27
성아 (SUNG-AH) – 별동그라미세모 (I’m A Star)
Release Date: 2020.07.29
성아 (SUNG-AH) – TRANSITION_1
Release Date: 2019.10.02
성아 (SUNG-AH) – 샤랄랄라
Release Date: 2019.06.13
성아 (SUNG-AH) – Dear Daddy
Release Date: 2019.03.22
성아 (SUNG-AH) – 난 내가 좋아 (I Love Myself)
Release Date: 2018.11.19
성아 (SUNG-AH) – Maybe I’m Not That Special
Release Date: 2021.09.21