구식_舊識(旧识) 名词 1. 很久以前就认识的关系. [Credits] Composed by seoyeon, d'zany Lyrics by seoyeon, d'zany Arranged by d'zany, 안석호 Acoustic guitar 안석호 Electric guitar 안석호 Keyboard 전지윤 MIDI programming d'zany Produced by d'zany Recorded by d'zany Mixed by d'zany Mastered by 윤재경 @mbrica Photography by 임다영 @윤슬사진관 Hair & Makeup by 박민주