Red Velvet (3) – Russian Roulette

Backing Vocals – 유신혜
Backing Vocals – Belle Humble
Backing Vocals – Red Velvet (3)
Composed By, Arranged By – Markus Lindell (4)
Composed By, Arranged By – Belle Humble
Composed By, Arranged By – Albi Albertsson
Edited By [Digital Editing] – 장우영
Lyrics By – 조윤경
Mixed By – 남궁진
Music Director [Vocal] – 이주형
Recorded By – 이주형
Written-By [Original Writers] – Markus Lindell (4)
Written-By [Original Writers] – Belle Humble
Written-By [Original Writers] – Albi Albertsson

Backing Vocals – Hayley Aitken
Backing Vocals – Red Velvet (3)
Composed By, Arranged By – Ollipop
Composed By, Arranged By – Hayley Aitken
Lyrics By – Kenzie
Mixed By – 구종필
Music Director [Vocal] – Kenzie
Recorded By, Edited By [Digital Editing] – 정은경
Written-By [Original Writers] – Olof Lindskog
Written-By [Original Writers] – Hayley Aitken

Arranged By – Choi Jin Suk
Backing Vocals – Red Velvet (3)
Backing Vocals – Courtney Woolsey
Composed By – Nermin Harambasic
Composed By – Thomas Smågesjø
Composed By – Courtney Woolsey
Composed By – Choi Jin Suk
Edited By [Digital Editing] – 장우영
Lyrics By – 조윤경
Mixed By – 김철순
Music Director [Vocal] – 김진환
Recorded By – 장우영
Recorded By – 김현곤
Written-By [Original Writers] – Nermin Harambasic
Written-By [Original Writers] – Thomas Smågesjø
Written-By [Original Writers] – Courtney Woolsey
Written-By [Original Writers] – Choi Jin Suk

Backing Vocals – Maja Keuc
Backing Vocals – Red Velvet (3)
Backing Vocals – 신아녜스
Composed By, Arranged By – Andreas Öberg
Composed By, Arranged By – Simon Petrén
Composed By, Arranged By – 김원
Composed By, Arranged By – Maja Keuc
Edited By [Digital Editing] – 이지홍
Engineer [Protools Operating By] – 황현
Guitar – Andreas Öberg
Lyrics By – 정주희
Mixed By – 김철순
Music Director [Rap] – JQ (4)
Music Director [Vocal] – 황현
Producer – Simon Petrén
Recorded By – 이지홍
Recorded By – 정은경
Recorded By – 황현
Recorded By – 김현곤
Recorded By [Assistant] – 우민정
Written-By [Original Writers] – Andreas Öberg
Written-By [Original Writers] – Simon Petrén
Written-By [Original Writers] – 김원
Written-By [Original Writers] – Maja Keuc

Backing Vocals – Malin Johansson (3)
Backing Vocals – Josef Melin
Backing Vocals – Red Velvet (3)
Composed By, Arranged By – Malin Johansson (3)
Composed By, Arranged By – Josef Melin
Lyrics By – 1월8일
Mixed By – 정의석
Music Director [Vocal] – 추대관
Recorded By, Edited By [Digital Editing] – 추대관
Written-By [Original Writers] – Malin Johansson (3)
Written-By [Original Writers] – Josef Melin

Backing Vocals – Kenzie
Backing Vocals – Red Velvet (3)
Backing Vocals – 신아녜스
Directed By – Kenzie
Lyrics By, Composed By, Arranged By – Kenzie
Mixed By – 구종필
Recorded By, Edited By [Digital Editing] – 정은경

Backing Vocals – Red Velvet (3)
Backing Vocals – 황현
Backing Vocals – 신아녜스
Directed By – 황현
Engineer [Protools Operating By], Edited By [Digital Editing] – 황현
Guitar – 정수완
Keyboards – 황현
Lyrics By, Composed By, Arranged By – 황현
Mixed By – 정은경
Recorded By – 정은경
Recorded By – 황현
Recorded By [Assistant] – 우민정