올해도 고생 많았어 생일 축하해 :-) [Credit] 01. Birthday Produced by 범(BUM) Lyrics by 범(BUM) Composed by 범(BUM) Arranged by 범(BUM) Recorded by 범(BUM) Chorus by 범(BUM) Mixed & Mastered by 김대현 @ Headbang Studio Cake by 진주현