- Hawwah - EP · 2015
- VIP (Original Soundtrack) · 2019
- Step 2/4 - EP · 2010
- Hawwah - EP · 2015
- Romantic Spring - EP · 2013
- Hawwah - EP · 2015
- Hawwah - EP · 2015
- Talk About S. - EP · 2012
- Hawwah - EP · 2015
- 떠나라 미스김 · 2007
- End Again - EP · 2016
- 내 생애 봄날 (Original TV Soundtrack) · 2014
- End Again - EP · 2016
Music Videos
- 2012
- 2015
Compilations
About GAIN
- HOMETOWN
- Gangseo District
- BORN
- 20 de setembro de 1987
- GENRE
- K-Pop