S (강타, 신혜성, 이지훈) – 숨
Track 27 from Album "외출 OST"
Release Date: 2005.09.05
S (강타, 신혜성, 이지훈) – I Believe
Track 12 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – Sentimental
Track 09 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – Prayer
Track 10 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – Never Knew
Track 07 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – 사랑밖에 모르죠 (Love Is What I Need)
Track 08 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – 왜… (I Wass…)
Track 06 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – 달이 꾸는 꿈 (Tears Of The Moon)
Track 04 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – 몰랐죠 (Stay)
Track 05 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – 사랑니 (Love Is…)
Track 02 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – 미쳤었죠 (Just One Moment)
Track 03 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – I Swear
Track 01 from Album "Group'S'1집 - I Swear"
Release Date: 2003.09.25
S (강타, 신혜성, 이지훈) – Secret Letter
Track 05 from EP "Autumn Breeze"
Release Date: 2014.10.24
S (강타, 신혜성, 이지훈) – 세상 속으로 (Utopia)
Track 03 from EP "Autumn Breeze"
Release Date: 2014.10.24
S (강타, 신혜성, 이지훈) – 이런 어느 날 (One Fine Day)
Track 04 from EP "Autumn Breeze"
Release Date: 2014.10.24
S (강타, 신혜성, 이지훈) – 내려놓기 (One Last Memory)
Track 02 from EP "Autumn Breeze"
Release Date: 2014.10.24
S (강타, 신혜성, 이지훈) – 하고 싶은 거 다 (Without You)
Track 01 from EP "Autumn Breeze"
Release Date: 2014.10.24