345678910내일 할 일 (with Sung Si Kyung)
11No Schedule (with Kim Yeon Woo)
12너에게 간다 (with Kim Bum Soo)
1314환생 (with Kingston Rudieska)
15161718Annie (with SWEET SORROW)
19그댄 여전히 멋있는 사람 (with Kim Yuna)
20 ℗ 2013 MONTHLY YOONJONGSHIN,under license to Kakao Entertainment