If you did not hear it, the composer 'Donnie J' was completed by producing an acoustic guitar riff and groove to music by ear-catching rhythm take. Two elseun 'informed voice in the album' Paul Kim 'and two together is like a piece of music like watching the development of drama and music lovers break up a relationship with the title If you did not hear it, like a straightforward lyrics It is harmonized.Lyrics by wonsseogen \u002F Composed by Donnie J \u002F Arranged by Donnie J.Rap by wonsseogen \u002F Vocal by Paul Kim \u002F Chorus by Paul Kim \u002F Narration by scholarsGuitar by boat jinpyo \u002F Bass by JT Kim \u002F Vocoder by Donnie J \u002F Keyboards by Donnie J \u002F Voice Editing by STiRecording Engineer wonsseogenStudio, Rocketan Studio wonsseogenMixing Engineer Donnie Jneruon StudioSeongjihunJSF Studio Mastering Engineer