Blue Valentine is the debut studio album by South Korean girl group Nmixx. It was released by JYP Entertainment and Republic Records on October 13, 2025, and contains twelve tracks, including the lead single of the same name.
Background and release On September 15, 2025, upon the release of a motion poster, JYP Entertainment announced that Nmixx would be releasing their first studio album titled Blue Valentine on October 13. The promotion schedule was released the following day. On September 24, the album tracklist was revealed, confirming the lead single of the same name. It was also confirmed that two split parts of the group's debut single "O.O", subtitled "Baila" and "Superhero", would be included in the album. The album trailer video titled The Paradox of Love was released on September 26. "Valentine", "Blue" and "Chaos" versions of concept photos were released from September 27 to 29.
The teaser and video for the album's second track "Spinnin' on It" were released on October 3 and 4 respectively. On October 8 and 10, the a cappella and original highlight medley videos of the album's tracks were released respectively. The music video teaser for the lead single was released on October 12. The album was released on October 13, alongside the music video for the lead single.
Promotion On October 13, 2025, prior to the release of Blue Valentine, Nmixx held a countdown live event on YouTube to celebrate the release of the studio album and connect with their fanbase. A pop up store was also hosted from October 15 to 26 at the IFC Mall in Seoul to commemorate the album's release.
Accolades Year-end lists + Publication List Rank Billboard The 25 Best K-Pop Albums of 2025: Staff Picks 2 Forbes Most Acclaimed K-Pop Group Album of 2025 1 Idology Top 20 Albums of 2025 IZM The Best Korean Albums of 2025 NME The 50 Best Albums of 2025 49 Teen Vogue 15 Best Non-English Albums of 2025
Track listing
Credits and personnel Credits adapted from album's liner notes.
Studio JYPE Studio – vocal editing , recording , mixing Ingrid Studio – vocal editing Alawn Music Studios – mixing Stay Tuned Studio – mixing Snackworld – mixing , mastering Klang Studio – mixing Glab Studio – mixing for Dolby Atmos 821 Sound Mastering – mastering
Personnel
Nmixx – vocals , background vocals Lily – background vocals , lyrics Haewon – background vocals , lyrics Jiwoo – background vocals Kyujin – background vocals J14 (Full8loom) – lyrics Youra (Full8loom) – lyrics Danke (Lalala Studio) – lyrics Kook Ji-won (Jam Factory) – lyrics Moon Seol-ri – lyrics Jellybean (153/Joombas) – lyrics Milena – lyrics Seora – lyrics 3! (Lalala Studio) – lyrics Since – lyrics Kang Eun-jeong – lyrics Oh Hyun-sun (Lalala Studio) – lyrics Shin Sa-gang (XYXX) – lyrics Error404 – lyrics Lee Hyeong-ju (Lalala Studio) – lyrics Ha Yoon-a (153/Joombas) – lyrics Sophie Powers – lyrics, composition, background vocals Lauren Dyson – lyrics, composition David Wilson Dwilly – lyrics, composition, arrangement, drums, keys, bass, guitar, programming Jonjon (XYXX) – lyrics Jeon Se-hui (Inhouse) – lyrics Lee Green (Lalala Studio) – lyrics Jeong Na-kyeong (153/Joombas) – lyrics Chari (153/Joombas) – lyrics Park Sang-yu (153/Joombas) – lyrics Jo In-ho (Lalala Studio) – lyrics Song Yu-jin (Jam Factory) – lyrics Moon Ji-young (Lalala Studio) – lyrics Lee Seu-ran – lyrics Im Su-ran – lyrics Hyeong-geun (PNP) – lyrics Choi Bo-ra (153/Joombas) – lyrics Rory (Jam Factory) – lyrics Dr. JO – lyrics Kass – composition, arrangement, computer programming, piano, electric guitar, synths, bass Sevn Dayz – composition Stalking Gia – composition Lee Hae-sol – arrangement Lee Woo-min "collapsedone" – composition, arrangement, computer programming, bass, electric guitar, synths, piano, vocal directing, vocal editing C'SA – composition , background vocals , vocal directing , vocal editing Fredrik "Fredro" Odesjo – composition, arrangement Julie Yu – composition Anders Gukko – composition Rebbi James – composition , background vocals Sandra Wikström – composition Ends – composition, arrangement, synth, drums, bass, vocal directing Matthew Ferree Mattisnotfamous – composition, arrangement, drums, keys, bass, guitar, programming Esum – composition, arrangement, computer programming, piano, electric guitar, synths, bass, vocal directing Kristine Bogan – composition Charlie McClean – composition Ido Nadjar – composition Amanda Cy – composition Teodor Dahlbom Teo – composition, arrangement, programming, synths, vocal FX Ryan S. Jhun – composition, arrangement Marc Sibley (Space Primates) – composition, arrangement, programming, guitars, keys, bass Nathan Cunningham (Space Primates) – composition, arrangement, programming, guitars, keys, bass Lauren Amber Aquilina – composition Marcus Andersson – composition Mack – composition Jonathan B-T – composition Gustav Blomberg – composition, arrangement, all instruments, electric guitar Morwell – composition, arrangement, computer programming, bass guitar, synths, electric guitar Kamilla Bayrak – composition Rodnae "Chikk" Bell – composition, background vocals Johan Gustafsson – composition, arrangement, computer programming, guitars, synths Brian U (The Hub) – composition, arrangement, drums, synths, vocal directing , computer programming Enan – composition, arrangement, drums, synths, vocal directing Chanti (The Hub) – composition Charlotte Wilson – composition, vocal directing Awrii (The Hub) – composition, background vocals , vocal directing Ayushy (The Hub) – composition, background vocals Rajan Muse – composition Jan Baars – composition Frankie Day (The Hub) – background vocals MarkAlong – composition, arrangement, computer programming, drums, synths Ejae – composition, background vocals , vocal directing Markus Sepehrmanesh – electric guitar Jade – bass BananaGaraG – bass Paper Planet – guitar Triad – guitar Sophia Pae – vocal directing Kriz – vocal directing Perrie – vocal directing Song Hee-jin – vocal directing Kim Gab-soo – vocal editing , recording Eom Se-hee – vocal editing , recording , mixing Lim Chan-mi – vocal editing , recording Jung Eun-kyung – vocal editing Lee Sang-yeop – vocal editing Jiyoung Shin NYC – vocal editing Lee Chang-hoon – recording Gu Hye-jin – recording Seo Eun-il – recording Choi Hye-jin – recording Lee Tae-seob – mixing Alawn – mixing Stay Tuned – mixing Tom Norris – mixing, mastering Im Hong-jin – mixing Gu Jong-pil – mixing Eom Se-hyeon – engineering for mix Jaycen Joshua – original mixing Jacob Richards – original mixing assistance Mike Seaberg – original mixing assistance DJ Riggins – original mixing assistance Shin Bong-won – mixing in Dolby Atmos Park Nam-jun - mixing assistance in Dolby Atmos Victor Verpillat - mastering Kwon Nam-woo – mastering
Charts
Weekly charts + Chart (2025) Peakposition Croatian International Albums (HDU) 34 Greek Albums (IFPI) 37 Japanese Combined Albums (Oricon) 37 Japanese Hot Albums (Billboard Japan) 40 South Korean Albums (Circle) 2 US Billboard 200 177 US World Albums (Billboard) 2
Monthly charts + Chart (2025) Position South Korean Albums (Circle) 6
Year-end charts + Chart (2025) Position South Korean Albums (Circle) 42
Certifications
Release history + Region Date Format Label South Korea October 13, 2025 Various
References