Executive Producer 박진우, 장동균 for neuron music Lyrics by 폴킴 Composed by 폴킴, Donnie J, Joseph K Arranged by Donnie J, Joseph K Vocal Director 전승우 Piano by 정동환 (1), Joseph K (2), Donnie J (3, 4, 5) Guitars by 홍준호 (2, 3), Michael 'Fish' Herring (4, 5) Bass by 이수형 (2), Alex Al (1, 3) Drums by 박은찬 (2) Strings Arrangement by 정동환 (1, 2), Joseph K (2) Violins by 박수민, 천민수, 김문영, 이선경, 이영준, 조아라, 오주희, 이서현, 박지연 Violas by 이혜미, 김정희, 신재현 Cellos by 임은진, 양지욱 Chorus by 김현아 (3), 전승우 (4), 폴킴 (1, 3, 4, 5), Donnie J (1, 3, 5) Recording Engineer: 홍용철@Evermore Studio, 정기홍@Seoul Studio, 이창선@Prelude Studio, Make Will@neuron Studio Mixing Engineer: 조준성@W Sound (2), Claudio Cueni@Earthtones Studio (1, 4, 5), Make Will@neuron Studio (3) Mastering Engineer: Randy Merrill@Sterling Sound, NY Promotion 강승윤 Management 진영민 Album Cover Artwork by 김유민 Album Cover Photograph by 김보성