Release date: October 14, 2009
Crazy (From Gas Station Under Attack 2) Original Sound Track:
Release date: December 28, 2009
Crazy (From Gas Station Under Attack 2)
God Of Study Part. 2 (Original Soundtrack):
Release date: January 25, 2010
Release date: March 1, 2010
More Charming By The Day (Original Soundtrack) Part. 3:
Release date: July 16, 2010
Release date: September 28, 2010
Release date: November 9, 2010
All My Love For You (Original Soundtrack) Part. 1:
Release date: December 2, 2010
Release date: May 17, 2011
Lightless (Unplugged Version)
Fiction (Orchestra Version)
My Princess (Original Soundtrack) Part. 1:
Flower, I Am (Original Soundtrack) Part. 1:
BIG (Original Soundtrack):
Release date: June 11, 2012
Hateful Person (Instrumental)
Release date: July 22, 2012
IRIS II (Original Soundtrack) Part. 3:
Release date: February 27, 2013
Black Paradise (Instrumental)
Man In Love (Original Soundtrack) Part. 4:
Release date: May 1, 2013
Bye Bye Love (Instrumental)
Hard to Love, How to Love:
Release date: July 19, 2013
Release date: June 16, 2014
Tonight, I'll Be At Your Side
Sad Movie (Korean Version)
Release date: October 20, 2014
Release date: July 27, 2015
I Think I Love You (Korean Version) (CD Only)
One Day (Korean Version) (CD Only)
Scholar Who Walks The Night (Original Soundtrack) Part. 5:
Release date: August 27, 2015
Without You (Instrumental)
Release date: July 4, 2016
Baby It's You (Doojoon, Gikwang)
I'll Give You My All (Dongwoon)
