올티 (Olltii) - ROC Drill (Prod. BUM) Official Music Video

병장 정우성, 만기 전역 신고 ROC Drill (Rehearsal of Concept Drill): 작전개념 예행연습 [Credits] Produced by BUM Written by Olltii Bass and Drums, Keyboard by BUM Mix & Mastered by gJ M/V Directed by YELLOCAN Art Work by Tomnerd