언제나 새롭게 진화하는 이승환의 대서사시와도 같은 신곡. drums Matt Chamberlain  bass Chris Chaney guitars Tim Pierce keyboards CJ Vanston 황성제 strings arrangement 정수민 1st violins 심상원 김미정 정현주 이승진 서영완 2nd violins 장지혜 김재현 정재윤 김신혜 violas 여수은 임진아 강현웅 cellos 장소희 박보경 choir 이승환 황성제 서미래 recorded by Ed Cherney (Assisted by Chandler Harrod) 이평욱 recorded at Capitol Studios LA  DREAMFACTORY STUDIO mixed by Rob Chiarelli 홍성준 mixed at DREAMFACTORY STUDIO mastered by Miles Showell for Abbey Road Mastering Studios UK   PRODUCED BY 이승환 황성제