人生只有一次 [Credit] 1. 한 개도 몰라 (Feat. meenoi) Lyrics by Leellamarz, meenoi Composed by TOIL, Leellamarz, meenoi Arranged by TOIL Piano, Drums, Percussion, Bass by TOIL Guitar by 이신우 Synthesizer by 박병일 Recorded by allday4real @ Sweet Family Studio Mixed by allday4real & Leellamarz @ Sweet Family Studio & The Quiett @ Quiett Heaven Mastered by The Quiett @ Quiett Heaven Photo by 박재효 @parkzaehyo