20 Years of Age - 쉿, 들어볼래 (Shh,)
20 Years of Age - 별 하나에 바람 하나 (One Star, One Wish)
20 Years of Age - 오늘이 어제가 되기 전에 (Before Today Becomes Yesterday)
20 Years of Age - 사랑인거야 (Call It Love)
20 Years of Age - 밤비 (Bam bi) (OST Revenge of Others Part.3)
20 Years of Age - 이별 스케치 (Parting Sketch)
20 Years of Age - 보고싶어, 집 앞이야 (I'm Right Outside)
20 Years of Age - 넌 나의 우주 (You're my Universe)
20 Years of Age - 더 미안하고 보고 싶고 그래 (I'm more sorry and miss you)
20 Years of Age - 너라는 계절 (Your Season) (OST Now, We Are Breaking Up Part.1)