AKMU/Akdong Musician (악동뮤지션) KOREAN Akdong Musician/AKMU (악동뮤지션) – 200% 200% ibaek percent “200%” PLAY 2014.04.07 Chan Hyuk, Soo Hyun Lyrics/작사: 이찬혁 Composer/작곡: 이찬혁 Arranger/편곡: 로빈, 이찬혁