영화 500일의 썸머를 생각하면서 곡을 만들었습니다.
단순히 한 인물의 입장에 서는 곡이 되지 않았으면 합니다.
누구나 극 중의 톰 입장이 될수도 있고 썸머 입장이 될수 있다고 생각하기 때문입니다.
저를 믿고 흔쾌히 작업해준 I AM LUU, Jae Luna 두 분에게 깊은 감사의 말씀을 드립니다.
I created this song with the movie <500 Days of Summer> in mind.
I didn’t want it to be a song that simply represents one character’s perspective.
This is because I believe anyone can relate to being in Tom’s position or Summer’s position in the story.
I’d like to express my heartfelt gratitude to I AM LUU and Jae Luna for trusting me and willingly collaborating on this
project.
*이 앨범은 2020년 9월 6일 발매된 “500 Days”의 어쿠스틱 버전입니다.
* This album consists of an acoustic version of “500 Days” released on September 6, 2020.
Executive Producer－Dept(뎁트) @dept113 
Presented by Dept Music(뎁트뮤직) @dept.music.official
Planning and Production Team - 뎁트, neeve @umum_neeve
Art directed by KIM JI SU @idealsyn
Lyrics video by 김현선 @cecy__kim
Mixed by Maltese Sound @maltese_sound
Mastered by Maltese Sound 
경영지원팀 김효중, 전현선 @haemjji2024
마케팅팀 김현선 @cecy__kim 이해리 @sharibo_
매니지먼트팀 성치현 @sung.tex.go, 이지예 @jiye_julia
음악팀 neeve @umum_neeve 이지예 @jiye_julia 장시유 @itssiu
1. 500 Days (Acoustic) (Feat. Jae Luna, I AM LUU)
작사(lyrics): 뎁트(Dept), Jae Luna, I AM LUU
작곡(composed): 뎁트(Dept), Jae Luna, I AM LUU
편곡(arrange): 뎁트(Dept), 황예, GRAM, merstro, 윤소진
Vocal by Jae Luna, I AM LUU
Piano by 윤소진

2. 500 Days (Acoustic) (Sped Up) (Feat. Jae Luna, I AM LUU)
작사(lyrics): 뎁트(Dept), Jae Luna, I AM LUU
작곡(composed): 뎁트(Dept), Jae Luna, I AM LUU
편곡(arrange): 뎁트(Dept), 황예, GRAM, merstro, 윤소진
Vocal by Jae Luna, I AM LUU
Piano by 윤소진
3. 500 Days (Acoustic) (Slowed) (Feat. Jae Luna, I AM LUU)
작사(lyrics): 뎁트(Dept), Jae Luna, I AM LUU
작곡(composed): 뎁트(Dept), Jae Luna, I AM LUU
편곡(arrange): 뎁트(Dept), 황예, GRAM, merstro, 윤소진
Vocal by Jae Luna, I AM LUU
Piano by 윤소진
4. 500 Days (Acoustic) (inst.)
작곡(composed): 뎁트(Dept), Jae Luna, I AM LUU
편곡(arrange): 뎁트(Dept), 황예, GRAM, merstro, 윤소진
Piano by 윤소진