[풀버전] ♬ Back Door - 비투비(BTOB) [원곡 정보] Title: Back Door Lyrics by 방찬 (3RACHA), 창빈 (3RACHA), 한 (3RACHA) Composed by 방찬 (3RACHA), 창빈 (3RACHA), 한 (3RACHA), HotSauce Arranged by HotSauce, 방찬 (3RACHA) Original publisher JYP Publishing (KOMCA) 전설이 되어라, WHO IS THE