KOREAN Seo In Young (서인영) Seo In Young (서인영) – Let’s Break Up (헤어지자) 헤어지자 Heeojija “Let’s Break Up” Forever Young 2013.05.15 Seo In Young Lyrics/작사: Kush, 선우정아 Composer/작곡: 서원진, Kush, 선우정아 Arranger/편곡: 서원진, 선우정아