01 I’m OK (feat. 송래퍼) Composed by 강철 Lyrics by 강철, 송래퍼 Arranged by 강철 Mixed by 강철 Mastered by 구름 Drum - 배현근 Bass - 강철 Guitar - 강철 02 28 Composed by 강철 Lyrics by 강철 Arranged by 강철 Mixed by 강철 Mastered by 구름 Drum - 배현근 Bass - 강철 Guitar - 강철 Chorus - 김나라, 배현근 Artwork by 안재경