Kim Jong Seo - 들리나요 (Can You Hear Me)
Kim Jong Seo - Plastic Syndrome
Kim Jong Seo - 아름다운 구속 (Beautiful restriction)
Kim Jong Seo - In my life
Kim Jong Seo - 대답 없는 너 (You Who Do Not Answer)
Kim Jong Seo - 주머니 속의 행복 (Happiness Inside the Pocket)
Kim Jong Seo - 내 앞에 선 너에게 (To you in front of me)
Kim Jong Seo - 내 기다림의 시작 (The Start of My Waiting)
Kim Jong Seo - 지금은 알 수 없어 (MY LOVE)
Kim Jong Seo - 따스한 봄날까지 (Until the Warm Spring Day)