[+ +] (plus plus) is the debut mini-album of South Korean girl group LOOΠΔ. It was released on August 20, 2018. It contains 6 tracks including the lead single "favOriTe" and the title track "Hi High" with the music video releasing the same day. It was later re-released as [X X] with six new tracks.


‘+ +’ represents the ‘plus plus’ effect LOOΠΔ 1/3, ODD EYE CIRCLE, yyxy, and YeoJin gather to create. LOOΠΔ was born in its own universe with three uniquely structured teams. In other words, it was not designed as a group diving up into three units, but three teams were built to create one universe.


  1. "+ +" - 00:58
  2. "Hi High" - 3:16
  3. "favOriTe" - 3:14
  4. "열기" - 3:30
  5. "Perfect Love" - 3:34
  6. "Stylish" - 3:29



Behind The Scenes


  • The songs were first performed at LOONAbirth, a day before their official release.
  • The album has four physical versions:
    • Normal A version:
      • Photobook version A
      • 1 of 12 Normal ver. A photocards
      • White CD
    • Normal B version:
      • Photobook version B
      • 1 of 12 Normal ver. B photocards
      • Normal version B cover CD
    • Limited A version:
      • Photobook version A
      • 1 of 2 Limited ver. A photocards
      • Black CD
    • Limited B version:
      • Photobook version B
      • 1 of 2 Limited ver. B photocards
      • Limited version B cover CD
  • The album was chosen as the 17th best k-pop album of 2018 by Billboard.[1]
  • For the photoshoot, the members were split into two units based on height:
    • Up unit (Tall): HeeJin, HyunJin, Kim Lip, JinSoul, Yves, Olivia Hye
    • Line unit (Short): HaSeul, YeoJin, ViVi, Choerry, Chuu, Go Won

Album Credits

  • Executive Producer: Lee Jong Myung
  • Creative Director: Jaden Jeong
  • Music Producer: Jaden Jeong
  • A&R: Ryu Ji In, Kim Hyun Ho @ BlockBerryCreative
  • Recording Engineer: GDLO, G-high @ MonoTree Studio; Min Seong Soo @ doobdoob Studio; Jung Eun King @ InGrid Studio; Iggy (OREO) @ OREO Studio
  • Mixing Engineer: Joey Mclaren @ Relic studio; Hwang Hyun @ MonoTree Studio; Ko Hyun Jung @ Koko sound Studio; Yoo Won Gwon @ Studio SEAN; Kim Seok Min @ Mapps Studio
  • Mastering Engineer: Kwon Nam Woo @ 821 Sound Mastering
  • Project Supervisor: Park Se Jin
  • Management Director: Yoon In Ro
  • Management: Lee Geun Mook, Han Do Ho, Oh Ji Mae, Shim Sung Hwan, Min Dong Hyuk, Jung Min Jeol, Baek Gyung Taek, Ko Jae Sun
  • Accounting: Jang Hye Gyung
  • Chief Communication Officer: Nam An Woo
  • Communication: Park Bo Ra, Bang Bo Mi, Kim Sun Gyung, Wang Ha Rim
  • Cooperation: Yoon Do Yeon
  • Training: Park Sang Ho
  • Casting: Jo Yong Jin
  • Styling Director: Kim Min @ BlockBerryAtelier
  • Hair Director: Jo Cheon Il @ BlockBerryAtelier
  • Makeup Director: Jang Yoo Jin @ BlockBerryAtelier
  • Music Video: @ Digipedi
  • Performance Director: "CaShe" (Hyungyu HG Kim, Faryoung Kim)
  • Photographer: Mugunghwa Sonyeo (mugung)
  • Art Director: Lee Moon Yeong @ Digipedi
  • Art Work: Studio XXX





  1. Billboard - The 20 Best K-pop Albums of 2018


v - e
HeeJinHyunJinHaSeulYeoJinViViKim LipJinSoulChoerryYvesChuuGo WonOlivia Hye
Solo singles
Mini albums
Repackage albums
Digital singles The Carol 2.0favOriTe365
Exclusive releases
Concerts LOOΠΔbirth (2018) • LOOΠΔ Concert [LOOΠΔVERSE] (2019)
Other LOOΠΔ x Study Group (2018) • LOOΠΔ Cinema Theory: Up & Line (2018) • LOOΠΔ Premier Greeting: Line & Up (2018) • LOOΠΔ Studio (2018) • LOOΠΔ Premier Greeting: Meet & Up (2019)
Dramas WoomannaDating Class
Shows Insane Quiz Show Season 2The GashinasShows Appearances : BackstagesInterviewsLivestreamsRadio Shows
Covers DanceVocal
Others ChoreographyFancamsLive PerformancesMiscellaneous VideosMusic VideosTeasers
Characters HeeJinHyunJinHaSeulYeoJinViViKim LipJinSoulChoerryYvesChuuGo WonOlivia Hye
Locations EarthCosmosEden
Analysis Music Videos ViViDAround YouLet Me InI'll Be ThereThe CarolKiss LaterEveryday I Love YouEveryday I Need YouEclipseSinging in the RainLove Cherry MotionnewHeart AttackOne & OnlyEgoistfavOriTeHi HighButterfly
Cinema Theory ViVi Letter to Hong KongSee SawStarlightI Like You More Nowone
Teasers Reveal Teaser (OEC)oneX X teasers# teasers
Other Lore Möbius Strip TheoryThe Color TheoryCultural ReferencesdlrowehtanoolMinor theories
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