Karen Aoki

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Karen Aoki (青木 カレン) is a Japanese jazz vocalist and singer-songwriter. As part of a duet with Daisuke Hasegawa she sings "Great Days", the third opening theme song for Diamond is Unbreakable and the seventh opening overall for JoJo's Bizarre Adventure: The Animation.

She has also written the lyrics for several English language tracks on the Diamond is Unbreakable original soundtracks (one of which she also sings) and the English language lyrics to theme songs for "FINDING THE TRUTH", "Uragirimono no Requiem", and "Heaven's falling down".


Early life

Karen Aoki spent her early childhood growing up in Hong Kong and in Detroit. In her high school and college years, Karen traveled back and forth between Thailand, London, and Japan, all the while participating in various club events. A demo tape of a band that she had formed at the time was discovered by J-WAVE radio station, and was used as an opening song to one of their programs.

Later, while working as a photographic assistant, Karen was singing a cappella to one of her own creations and a media producer who had heard it then chose to use her voice in numerous commercials. After that, as she continued her musical creations, she released two mini indie albums, finally making her major debut in 2000 with three maxi singles and a full album.

Jazz and Professional Work

In 2003, her heart was captivated by the cool sound of jazz. She immediately looked up all the jazz clubs in Tokyo and participated in their vocalist sessions that same day. Karen gradually found herself singing in clubs all around the city, all while writing her own original jazz songs.

In 2006, her first jazz album Tokyo Jz Trippin' was released to high acclaim. The album reached #1 on many jazz charts in Japan.

In April 2007, she began hosting the TV program "Groovin' Jazz Night" by BS Asahi TV, and in August 2007, became a presenter of her own radio show "Smooth Night" (every Thursday 1-2am, Cross FM) while touring Japan and recording her next album, which was scheduled for release in June 2008.[1]

JoJo's Bizarre Adventure

In July 2016, she created the lyrics for "You Are My Woman/Alex Reed" in the Diamond is Unbreakable ~Good Morning Morioh Cho~ Original Soundtrack while Daisuke Hasegawa performed the vocals for the song. She and Hasegawa would later duet together on "Great Days", the third and final opening theme song for JoJo's Bizarre Adventure: Diamond is Unbreakable. Aoki also wrote the lyrics and performed the vocals for "FAITH" on the Diamond is Unbreakable ~Good Night Morioh Cho~ Original Soundtrack. She also wrote the English language version lyrics for "Great Days" and would later write lyrics for "FINDING THE TRUTH" per for the Thus Spoke Kishibe Rohan OVAs and the English version of "Uragirimono no Requiem" for JoJo's Bizarre Adventure: Golden Wind.


Aoki is one of the members of JO☆UNITED alongside Hiroaki "TOMMY" Tominaga, Coda, Jin Hashimoto, THE DU, batta, and Daisuke Hasegawa. Together, they performed "Great Days -Units Ver.-", featured in the final episode of Diamond is Unbreakable originally broadcast on December 24, 2016. The digital single was released the same day.

JoJo discography


Cover Album / Single Name Artist / Composer Use Release Date
1 Good Morning Morioh Cho OST.jpg Diamond is Unbreakable
~Good Morning Morioh Cho~
Original Soundtrack

(You Are My Woman/Alex Reed)
Yugo Kanno
Lyricist: Karen Aoki
Vocals: Daisuke Hasegawa
Diamond is Unbreakable July 27, 2016
2 JoJo OP7.png Great Days Karen Aoki & Daisuke Hasegawa
Arranger: Yugo Kanno
DU Episodes 27-38 October 19, 2016
3 GoodNight.png Diamond is Unbreakable
~Good Night Morioh Cho~
Original Soundtrack

Yugo Kanno
Vocals/Lyricist: Karen Aoki
Electric Guitar: Daisuke Hasegawa
Diamond is Unbreakable December 21, 2016
4 JoJo OP7b.png Great Days -Units Ver.- JO☆UNITED
(Hiroaki "TOMMY" Tominaga, Coda, Jin Hashimoto, Jun Shirota, Taisuke Wada, Jeity, Tatsu Hoshino, Karen Aoki, Daisuke Hasegawa)
DU Episode 39 December 24, 2016
Lyricist: Karen Aoki
Thus Spoke Kishibe Rohan (OVA) July 19, 2018
6 JoJo OP9.png Uragirimono no Requiem
(English Version)
Daisuke Hasegawa
Lyricist: Karen Aoki
Golden Wind March 27, 2019
7 Heaven's falling down Cover.jpg Heaven's falling down
(English Version)
sana (sajou no hana)
Lyricist: Karen Aoki
Stone Ocean December 1, 2022
8 Stone Ocean OST.png Stone Ocean O.S.T. Yugo Kanno
Chorus: Karen Aoki, Daisuke Hasegawa
Stone Ocean June 28, 2023

Extended discography

  • TOKYO Jz TRIPPIN’ - January 23, 2006
  • KAREN - September 22, 2007
  • SHINING - June 11, 2008
  • KAREN's SWINGIN' PARTY - November 21, 2008
  • THE CLUB JAZZ DIVA - April 22, 2009
  • A Beautiful Day - November 18, 2009
  • BY MY SIDE - February 17, 2010
  • KAREN ROCKS - February 16, 2011
  • VOYAGE - April 15, 2011
  • Twilight Jazz - January 18, 2012
  • Tranquility - December 12, 2012
  • Eternal Melody - January 21, 2015
  • Matt & Karen Lost in Rio - October 14, 2015
  • The Story of Karen Aoki -10th Anniversary Best- - September 28, 2016
  • The Calling - September 20, 2017
  • mellow - November 15, 2019
  • "another way" / "fire in the air" (featuring fox capture plan) - September 23, 2020
  • "innocence" (with Wataru Sato) - February 5, 2021
  • "without you" (with Wataru Sato) - February 12, 2021
  • "share my heart" (with Wataru Sato) - February 19, 2021
  • "broken open" (with Wataru Sato) - February 26, 2021
  • "HIKARI" & "Speak Low" (with Wataru Sato) - June 16, 2021




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