01. 처음 그 날처럼
Composed by 김형석
Lyrics by 김형석
Arranged by FTISLAND, illusion, SHANE TAKAYUKI
Background Vocals by 이재진
Bass by 이재진
Drum by 최민환
Guitar by SHANE TAKAYUKI
MIDI Programming by illusion
Recorded by 배훈직, 김정한, 김푸른솔, 서유덕, 이채원, 최연수, 김효원 @ FNC ENTERTAINMENT STUDIO
Digital Edited by 김푸른솔 @ FNC ENTERTAINMENT STUDIO
Mixed by 이유진 @ FNC ENTERTAINMENT STUDIO
Mastered by 권남우 @ 821 Sound Mastering