Formula of Love: O+T=<3

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Formula of Love: O+T=<3
Digital and "Study About Love" version cover
Studio album by
ReleasedNovember 12, 2021 (2021-11-12)
Recorded2021
StudioJYPE Studios (Seoul)
Genre
Length48:31
Language
  • Korean
  • English
Label
Twice chronology
Perfect World
(2021)
Formula of Love: O+T=<3
(2021)
#Twice4
(2022)
Singles from Formula of Love: O+T=<3
  1. "The Feels"
    Released: October 1, 2021
  2. "Scientist"
    Released: November 12, 2021

Formula of Love: O+T=<3[a] is the third Korean studio album (sixth overall) by South Korean girl group Twice. It was released on November 12, 2021, by JYP Entertainment and Republic Records. It consists of sixteen tracks, including the group's first English single "The Feels" and lead single "Scientist".

Selling over 700,000 units during its pre-order period, the album became Twice's best-selling album to date, surpassing a record previously held by More & More (2020). Primarily a disco-pop and synth-pop record, the album encapsulates a handful of other genres such as Latin pop, hip hop, and R&B. It debuted at number three on the Billboard 200 with 66,000 album-equivalent units, becoming the group's fourth and highest entry on the chart.

Background[edit]

Following Eyes Wide Open (2020), Formula of Love: O+T=<3 is Twice's third Korean-language studio album. It is the group's third release in 2021, following their tenth Korean extended play, Taste of Love, and third Japanese album, Perfect World.[3]

Formula of Love: O+T=<3 was first teased by Twice member Chaeyoung on September 13, 2021, in the behind-the-scenes video for her photoshoot with OhBoy! magazine, although at the time, not much was known about it.[4] At the end of the music video of Twice's first English single, "The Feels", a full-length album scheduled to be released in November 2021 was teased.[5] The name of the album and its release date was revealed on October 8.[3] A preview showing the four versions[b] of the physical album was posted on October 12, and pre-orders began later that day.[6][7] On October 29, the album's track listing was announced.[8]

Composition[edit]

Formula of Love: O+T=<3 is a fifteen-track[c] album that features genres such as dance-pop, soul-pop, synth-pop, disco-pop, hip-hop, trap and R&B that takes influence from city pop,[9] deep house,[10] disco,[11] Latin pop,[12] nu-disco, reggaeton,[9] and pop rock.[1] Twice members Nayeon, Jihyo, Dahyun, and Chaeyoung took part in writing some songs from the album.[13][14] In addition to the members, a variety of notable Western and JYP in-house songwriter-producers also participated, including The Stereotypes, Melanie Fontana, Tommy Brown, Anne-Marie, Lee Woo-min "collapsedone," Sim Eun-jee, Sophia Pae, and Earattack.[15]

Songs[edit]

Formula of Love: O+T=<3 opens with its lead single, "Scientist", a song blending elements of dance-pop and deep house, and featuring '80s-inspired synths with "groovy" bass lines in its production.[10][16] Lyrically, it delves into the theme of love and studying the fundamentals of romance, and by using science-related word play, they declare there is no right answer to love.[17][14] It is followed by English track "Moonlight", a disco-pop song that incorporates "funky" orchestration reminiscent of the 1980s.[12] Ana Clara Ribeiro of PopMatters noted that the song's "drum pattern, bassline, marimba, and percussions resemble soul-pop classics of the 1980s, like DeBarge's 'Rhythm of the Night', or Lionel Richie's 'All Night Long'."[1] Another English song, "Icon", is a "hard-hitting" and "sensual"[12] synth-pop track with elements of reggae-pop.[1] Lyrically, Mina said the song is about "expressing the iconic side of you without hesitation".[14] Tanu I. Raj of NME noted that "the track carries the determination of 'Fancy' and the irreverence of 'Don't Call Me Again', wrapping them up neatly in the confidence of an act absolutely secure in their vision and position."[12] In his review for Sputnikmusic, Raul Stanciu proclaimed "Icon" as the "most swag [track that] Twice can offer".[16]

The fourth track "Cruel", written by Dahyun, is a fast-paced song with lyrics about "turning the tables on someone while still maintaining innocence".[12] Raj compared it to Twice's song "Scandal" (Taste of Love), for having "the same calculated and dangerous allure".[12] The fifth track, "Real You", written by Jihyo, is a disco-pop song characterized by a bouncy rhythm and "catchy" bass line on top of a "trendy" funky sound.[1][18] Jihyo noted that the song is about "asking for truthfulness and sincerity from a person who is full of his/herself and doesn't realize what pure love is".[14] The sixth track "F.I.L.A. (Fall In Love Again)", written by Nayeon, is a dance-pop and disco-pop track that explores the conflict of a relationship with no future.[12][1][14]

The seventh track, "Last Waltz", is a Latin pop-inspired song that includes an interpolation of Tchaikovsky's "Waltz of the Flowers".[12][1] It features an acoustic guitar riff on top of a trap-based rhythm and violins that "channel the feeling of classical music that the song title suggests".[18][1] Momo explained the meaning behind the lyrics, saying "it is a sad story about wanting to make the day you break up with someone the best, perfect day. It's about two people wanting to make the sad ending happy."[14] This is followed by R&B and hip-hop infused track "Espresso",[12][16] built around a bass line, a heavy beat, and a whisper-like chorus.[18] Lyrically, Twice compares their charm to espresso and the "coffee" in question can be interpreted with a sexual connotation.[1]

The ninth track, "Rewind", is an R&B ballad with lo-fi sounds and swing rhythm.[18] The song's lyrics are about heartbreak after a break up.[12] The tenth track, "Cactus" (선인장), written and composed by Jihyo, is a ballad that incorporates pop-rock elements.[1] In an interview with the Associated Press, Jihyo revealed that the death of a houseplant was her inspiration for writing the song, and it was written from the plant's perspective, "seeing its owner walking in and out of the room and ignoring it".[19] She also noted that the song is about "the feeling of uneasiness from the uncertain future of a relationship".[14]

The eleventh track, "Push & Pull" is the first of three sub-unit tracks, and is performed by Jihyo, Sana, and Dahyun. The song's genre was variously described as city pop-inspired,[16] dance-pop and future funk,[12] and disco-pop,[1] accompanied by elements of 1980s soul and hip-hop.[18] It features some of Twice's "melodic trademarks", such as their "cute rap" in the post-chorus.[1] The song's lyrics are about playful pushing and pulling in a relationship "to bring the other person closer".[14] "Hello", a trap song performed by Nayeon, Momo, and Chaeyoung,[1] has lyrics devoted to Twice's "powerful and cool appearance onstage".[14] "1, 3, 2", performed by Jeongyeon, Mina, and Tzuyu is a medium-tempo reggae-pop song.[1][18] Lyrically, "it tells a story of a relationship that is going bad due to the mismatching tempos between the two people".[14] The closing track, "Candy", is a pop song dedicated to Twice's fanbase (Once).[14][18]

Title[edit]

The album's title, Formula of Love: O+T=<3, has two meanings according to Twice. The letters O and T represent the initials of Once—the group's official fandom's name—and Twice, respectively, while the heart symbol (<3) represents love; thus, the "formula of love" can be verbalized as "Once plus Twice equals love".[20] The letters O and T also represent the initials of numbers 1 (one) and 2 (two), respectively, while the number 3 in the heart symbol (<3) represents the position of Formula of Love: O+T=<3 in Twice's Korean albums chronology.[21]

Release and promotion[edit]

On October 20, 2021, during the group's sixth anniversary week, Twice held a livestreaming event titled H6me Party with 6nce, where they sang "Candy", an English song from the album dedicated to their fans.[22] On October 24, JYP Entertainment released a mockumentary-style trailer featuring Twice members dressed up as scientists at the "Twice Love Lab".[23] Twice released several concept photos to promote the album and its lead single, "Scientist".[24] In addition to these, teasers for the music video of "Scientist" were released days ahead of its release.[25] Hours before the official release of Formula of Love: O+T=<3, the group went live on YouTube and V Live to discuss the making-of the album.[26]

Critical reception[edit]

Professional ratings
Aggregate scores
SourceRating
Metacritic88/100[27]
Review scores
SourceRating
AllMusic[28]
Beats Per Minute82%[9]
NME[12]
PopMatters8/10[1]
Sputnikmusic3.8/5[16]

Formula of Love: O+T=<3 received widespread acclaim[29] from music critics who complimented its cohesiveness, consistency, and diversity. On Metacritic, which assigns a normalized rating out of 100 to reviews from professional publications, it received a mean score of 88 based on 5 reviews, indicating "universal acclaim"; it is one the highest-rated K-pop albums on the website.[27]

Writing for Sputnikmusic, Raul Stanciu gave Formula of Love: O+T=<3 a 3.8 out of 5 rating, praising Twice and the album's producers for presenting a "cohesive record", but stressed that it "could have been trimmed to 10 strong cuts". Stanciu also addressed the album's "slight drop in quality" in its second half.[16] Tanu I. Raj of NME gave the album a five-star rating, citing it as a "masterful win befitting [Twice's] global expansion". Raj added that the group's "absolute and unapologetic embracing of their concept has led them to the point where they can subvert it and still be considered credible".[12] South China Morning Post's Tamar Herman noted that "throughout it all, [the album] is a groovy, bouncy addition that feels true to the group while still trying new things."[30] For Beats Per Minute, Chase McMullen rated the album 82 out of 100, applauding Twice's "ability to crank out pop bliss with nearly superhuman speed" and the album's "irresistible eclecticism on display, with each and every track serving as a unique adventure into some different corner."[9] PopMatters critic Ana Clara Ribeiro wrote that the album is a proof for "anyone who ever thought of Twice as one-dimensional or that their 'cute' brand would limit them."[1] AllMusic's David Crone concluded his review by saying the album is Twice's best release to date and that it "surpasses expectations, infusing the group's love-centric lyricism with newfound confidence and creative flair."[28] Rolling Stone Korea called Formula of Love: O+T=<3 "the pinnacle of Twice's career history" and considered it as one of K-pop's best album of 2021.[31]

Year-end lists[edit]

Formula of Love: O+T=<3 on year-end lists
Critic/Publication List Rank Ref.
Beats Per Minute Top 50 Albums of 2021 48 [32]
Nylon 10 Best K-pop Albums of 2021 Placed [33]
Omelete 15 Best K-pop Albums of the Year 9 [34]
PopMatters Top 20 Best K-pop Albums of 2021 5 [35]
South China Morning Post 25 Best K-pop Albums of 2021 7 [36]
Time Best K-pop Songs and Albums of 2021 Placed [37]

Commercial performance[edit]

On November 10, 2021, it was reported that the album had gained over 630,000 pre-order sales by November 8, becoming Twice's most pre-ordered and best-selling album of all time before its release.[38] By November 10, it had reached over 700,000 pre-order sales.[39] In its first week, MRC Data reported that the album had sold 66,000 album-equivalent units in the United States.[40] Of these, 58,000 were pure sales, 8,000 were streaming-equivalent units, and a negligible amount were track-equivalent units.[40] On January 6, 2022, the Korea Music Content Association (KMCA) certified Formula of Love: O+T=<3 2× Platinum after it sold more than 500,000 units in South Korea.[41]

Formula of Love: O+T=<3 debuted at number 1 on South Korea's Gaon Album Chart, making it Twice's tenth number-one album on the chart, following More & More (2020).[42] In Japan, it peaked at number 17 on Billboard Japan's Hot Albums chart[43] and at number 2 on Oricon's Albums Chart.[44] The album became Twice's highest-charting album in the US and Canada to date, peaking at numbers 3[45] and 17[46] on the Billboard 200 and the Canadian Albums Chart, respectively. In addition to this feat, the album spent 8 consecutive weeks on the Billboard 200.[47] Moreover, on other Billboard charts, the album peaked at numbers 7, 2, and 1 on Tastemakers,[48] Top Album Sales,[49] and World Albums,[50] respectively. In Europe, the album appeared on Belgium's Ultratop Flanders and Wallonia 200 Albums,[51][52] Finland's Top 50 Albums,[53] Lithuania's Top 100 Albums,[54] the Netherlands' Album Top 100,[55] and the United Kingdom's Album Downloads Chart.[56]

Track listing[edit]

Track listing for Formula of Love: O+T=<3
No.TitleLyricsMusicArrangementLength
1."Scientist"Sim Eun-jee
  • Brown
  • Franks
  • Lindgren
3:14
2."Moonlight"
  • Jonathan Yip
  • Ray Romulus
  • Jeremy Reeves
  • Ray Charles McCullough II
The Stereotypes3:39
3."Icon"
  • Melanie Fontana
  • GG Ramirez
  • Fontana
  • Lindgren
  • Ramirez
Lindgren2:56
4."Cruel"Dahyun
  • Cutfather
  • Bilsby
  • Christiansen
3:31
5."Real You"Jihyo
  • Earattack
  • Sophia Pae
  • Gongdo
  • Master Key
  • Earattack
  • Gongdo
3:07
6."F.I.L.A. (Fall in Love Again)"Nayeon
  • Stokke Wik
  • Mason
  • Poole
  • Svendsen
3:11
7."Last Waltz"Sim Eun-jee
  • Sim
  • Lee Hae-sol
  • Ejae
Lee2:50
8."Espresso"
  • MosPick
  • Young Chance
  • MosPick
  • Young Chance
MosPick3:07
9."Rewind" (알고 싶지 않아; Algo Sipji Anha; lit. "I Don't Want to Know")Jeong Ho-hyun (e.one)JeongJeong3:00
10."Cactus" (선인장; Seoninjang)Jihyo
  • Jihyo
  • Coke Paris
Coke Paris3:37
11."Push & Pull" (Jihyo, Sana, Dahyun)Lee Seu-ran
  • Justin Reinstein
  • Anna Timgren
Reinstein3:25
12."Hello" (Nayeon, Momo, Chaeyoung)
  • Jed
  • Luke
  • Davidior
  • Davidior
  • Jed
Davidior3:03
13."1, 3, 2" (Jeongyeon, Mina, Tzuyu)Sim Eun-jee
  • Marcus Van Wattum
  • Jenson Vaughan
  • Lauren Dyson
  • Alexander Pavelich
  • Van Wattum
  • Vaughan
  • Dyson
  • Pavelich
3:18
14."Candy"Lewis Shay "Shift K3Y" JankelShift K3YShift K3Y3:15
Physical edition only
No.TitleLyricsMusicArrangementLength
15."The Feels" (Korean version)
  • Chaeyoung
  • Lee Woo-min "collapsedone"
  • Reinstein
  • Timgren
  • Boy Matthews
  • collapsedone
  • Reinstein
  • Timgren
  • collapsedone
  • Reinstein
3:18
Total length:48:31
Digital edition only
No.TitleLyricsMusicArrangementLength
15."The Feels"
  • collapsedone
  • Reinstein
  • Timgren
  • Matthews
  • collapsedone
  • Reinstein
  • Timgren
  • collapsedone
  • Reinstein
3:18
16."Scientist" (R3hab remix)Sim Eun-jee
  • Anne-Marie
  • Fontana
  • Lindgren
  • Brown
  • Franks
  • 72
  • Brown
  • Franks
  • Lindgren
  • R3hab
3:28
Total length:51:59
Result File version
No.TitleLyricsMusicArrangementLength
15."The Feels" (Korean version)
  • Chaeyoung
  • collapsedone
  • Reinstein
  • Timgren
  • Matthews
  • collapsedone
  • Reinstein
  • Timgren
  • collapsedone
  • Reinstein
3:18
16."The Feels"
  • collapsedone
  • Reinstein
  • Timgren
  • Matthews
  • collapsedone
  • Reinstein
  • Timgren
  • collapsedone
  • Reinstein
3:18
Total length:51:49

Personnel[edit]

Credits adapted from Melon and album liner notes.[18][15]

Studios[edit]

  • JYPE Studios – recording (All tracks), mixing (Tracks 1, 3-6, 11, 13)
  • Beach Wave Sound – mixing (Tracks 2)
  • Klang Studio – mixing (Tracks 7, 12, 14)
  • Joe Lab – mixing (Tracks 8-9)
  • Glab Studios – mixing (Track 10)
  • 821 Sound – mastering (All tracks)

Musicians[edit]

  • Twice – vocals (all tracks)
  • Choi Joon-yeong – bass (track 10)
  • Ejae – background vocals (track 7)
  • Melanie Fontana – background vocals (tracks 1, 3, 17)
  • Jeong Ho-hyun – keyboard, background vocals (track 9)
  • Kang Dong-ha – piano (track 8)
  • Kim Jong-sung – guitar (track 5)
  • Kim Myeong-gwan – guitar (track 10)
  • Kim So-hyun – background vocals (track 9)
  • Sound Kim – background vocals (track 8)
  • Lee Eun-seong – chorus vocals (track 10)
  • Lee Hae-sol – instrumentation, keyboard, synthesizer (track 7)
  • Lee Woo-min "collapsedone" – bass, guitar, instrumentation, synthesizer (tracks 15–16)
  • Sonny J Mason – producer (track 6)
  • No Hui-chang (Coke Paris) – guitar, MIDI programmer, piano (track 10)
  • Sophia Pae – background vocals (tracks 1–6, 11, 13–17)
  • Park Woo-jeong – guitar (track 8)
  • Justin Reinstein – instrumentation (track 11), synthesizer (tracks 15–16)
  • Michel "Lindgren" Schulz – vocal producer (tracks 1, 17)
  • Ronny Svendsen – producer (track 6)
  • Anna Timgren – background vocals (tracks 15–16)
  • Young Chance – electric piano (track 8)

Technical[edit]

  • Choi Hye-jin – recording (tracks 8, 12)
  • Kevin "KD" Davis – mixing (track 2)
  • earattack – vocal director (track 12)
  • Eom Se-hee – recording (tracks 1–10, 13–17)
  • Gene Grimaldi – mastering (track 2)
  • John Hanes – immersive mixing (track 16)
  • Im Hong-jin – mixing (track 4, 13)
  • Jeong Yu-ra – digital editing (tracks 5, 12)
  • Kang Dong-ho – assistant mixing (tracks 8–9)
  • Koo Jong-pil – mixing (tracks 7, 12, 14)
  • Koo Hye-jin – recording (tracks 1–2, 5, 7, 9–11, 14, 17)
  • Kwon Nam-woo – mastering (tracks 1, 3–16)
  • Lee Sang-yeop – recording (tracks 3–4, 6, 14–16)
  • Lee Tae-seop – mixing (tracks 1, 3, 5)
  • Lee Woo-min "collapsedone" – programmer, vocal director, vocal editing (tracks 15–16)
  • Tony Maserati – mixing (tracks 15–16)
  • No Hui-chang (Coke Paris) – vocal editing (track 10)
  • Sophia Pae – vocal director (tracks 2–4, 6, 14–17)
  • Park Eun-jeong – mixing (tracks 6, 11)
  • Justin Reinstein – programmer (tracks 11, 15–16)
  • Shin Bong-won – mixing (track 11)
  • Jiyoung Shin NYC – additional editing (tracks 2–4, 6, 11, 14), digital editing (track 13)
  • Sim Eun-jee – digital editing, vocal director (tracks 1, 7, 13, 17)
  • Uncle Joe (조씨아저씨) – mixing (tracks 8–9)
  • David K. Younghyun – assistant mixing (tracks 15–16)

Charts[edit]

Certifications and sales[edit]

Certifications for Formula of Love: O+T=<3
Region Certification Certified units/sales
Japan 68,975[63]
South Korea (KMCA)[41] 3× Platinum 894,416[64]
United States 58,000[40]

Release history[edit]

Release dates and formats for Formula of Love: O+T=<3
Region Date Format(s) Label Ref.
Various November 12, 2021 [65][66]
United States CD (Target exclusive) [67]
South Korea December 17, 2021 CD (Result File version) JYP [68]

See also[edit]

Notes[edit]

  1. ^ Read as "O plus T equals heart".[2] For its definition, see § Title.
  2. ^ Study About Love, Break It, Explosion, and Full of Love.[6]
  3. ^ The digital edition of Formula of Love: O+T=<3 features 16 tracks. See § Track listing.

References[edit]

  1. ^ a b c d e f g h i j k l m n o p q Ribeiro, Ana Clara (December 15, 2021). "TWICE Upgrade Their Brand On 'Formula of Love: O+T=<3'". PopMatters. Archived from the original on December 15, 2021. Retrieved December 16, 2021.
  2. ^ TWICE Reveals How They've Changed Over the Years. YouTube. Then vs. Now. Seventeen. November 12, 2021. Event occurs at 11:28. Retrieved November 16, 2021.
  3. ^ a b Citations concerning releases prior to Formula of Love: O+T=<3:
  4. ^ Ziwei, Puah (September 14, 2021). "TWICE's Chaeyoung reveals the girl group are "recording" new music". NME. Archived from the original on October 9, 2021. Retrieved October 15, 2021.
  5. ^ Citations concerning the release of "The Feels":
  6. ^ a b "TWICE THE 3RD FULL ALBUM "Formula of Love: O+T=<3" Album Preview". Twice Official Site (in Korean). October 12, 2021. Archived from the original on October 13, 2021. Retrieved October 13, 2021.
  7. ^ "TWICE THE 3RD FULL ALBUM "Formula of Love: O+T=<3" Pre-Order". Twice Official Site. October 12, 2021. Archived from the original on October 13, 2021. Retrieved October 13, 2021.
  8. ^ Yeo, Gladys (October 29, 2021). "TWICE unveil the tracklist for 'Formula of Love: O+T=<3'". NME. Archived from the original on October 29, 2021. Retrieved October 29, 2021.
  9. ^ a b c d McMullen, Chase (November 16, 2021). "Album Review: TWICE – Formula of Love: O+T=<3". Beats Per Minute. Archived from the original on November 16, 2021. Retrieved November 16, 2021.
  10. ^ a b Dongre, Divyansha (November 12, 2021). "TWICE Decodes The Formula Of Love in 'Scientist'". Rolling Stone India. Archived from the original on November 12, 2021. Retrieved November 12, 2021.
  11. ^ "TWICE serve up disco delights on glistening global single 'The Feels'". NME. October 1, 2021. Archived from the original on October 26, 2021. Retrieved November 15, 2021.
  12. ^ a b c d e f g h i j k l m Raj, Tanu I. (November 15, 2021). "TWICE – 'Formula of Love: O+T=<3' review: a masterful win befitting their global expansion". NME. Archived from the original on November 15, 2021. Retrieved November 15, 2021.
  13. ^ Seon, Mi-kyung (November 12, 2021). "'컴백' 트와이스 "정규3집 기뻐..재미있는 앨범 됐으면 좋겠다"[일문일답]". OSEN (in Korean). Archived from the original on November 12, 2021. Retrieved November 12, 2021.
  14. ^ a b c d e f g h i j k Bailey, Alyssa (November 12, 2021). "TWICE on The Meaning of Their Album 'Formula of Love: O+T=♡' and How 6 Years Together Made Them a Family". Elle. Archived from the original on November 12, 2021. Retrieved November 12, 2021.
  15. ^ a b Formula of Love: O+T=<3 (CD). Twice. JYP Entertainment. 2021.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
  16. ^ a b c d e f Stanciu, Raul (November 14, 2021). "Review: Twice – Formula of Love: O+T=<3". Sputnikmusic. Retrieved November 15, 2021.
  17. ^ Ziwei, Puah (November 12, 2021). "TWICE unveil third full-length album, 'Formula of Love: O+T=<3'". NME. Archived from the original on November 12, 2021. Retrieved November 12, 2021.
  18. ^ a b c d e f g h "Formula of Love: O+T=<3". Dreamus. JYP Entertainment. Archived from the original on November 23, 2021. Retrieved November 23, 2021 – via Melon.
  19. ^ Park, Juwon (November 15, 2021). "K-pop band TWICE basking in global popularity, plans US tour". Associated Press. Archived from the original on November 15, 2021. Retrieved November 16, 2021.
  20. ^ Hong, Hye-min (November 11, 2021). "트와이스, 선주문만 70만 장". Hankook Ilbo (in Korean). Archived from the original on November 11, 2021. Retrieved November 11, 2021.
  21. ^ "TWICE – Formula of Love: O+T=<3". Twice Official Website (in Korean). Archived from the original on November 12, 2021. Retrieved November 12, 2021. The title has dual meanings: 'when ONCE and TWICE meet, it becomes love (<3)' by using the initials of ONCE, the official name of TWICE's fandom, and TWICE, and it is the third full-length album ('1+2=3') by using English words.
  22. ^ Citations concerning the live performance of "Candy":
  23. ^ Citations concerning Formula of Love: O+T=<3's album trailer:
  24. ^ Lee, Soo-jin (November 4, 2021). "트와이스, 이번엔 펑키한 '익스플로전' 버전 공개". Newsis (in Korean). Archived from the original on November 8, 2021. Retrieved November 8, 2021.
  25. ^ Lee, Seul (November 10, 2021). "트와이스, '사이언티스트' 퍼포먼스 일부 공개...귀여운 악동 변신". Xports News (in Korean). Archived from the original on November 10, 2021. Retrieved November 10, 2021.
  26. ^ Lee, Deok-haeng (November 13, 2021). "트와이스, 'SCIENTIST'로 新 인기 공식 정립…"팬들에게 선물 같은 작품이길"". Star News (in Korean). Archived from the original on January 12, 2022. Retrieved January 12, 2022 – via Naver.
  27. ^ a b "Formula of Love: O+T=<3 by Twice Reviews and Tracks". Metacritic. Archived from the original on January 19, 2022. Retrieved January 19, 2022.
  28. ^ a b Crone, David (January 14, 2022). "Formula of Love: O+T=<3 – Twice". AllMusic. Archived from the original on January 15, 2022. Retrieved January 15, 2022.
  29. ^ McNeal, Bria (Nov 16, 2021). "K-Pop Girl Group TWICE Announces Fourth World Tour". NYLON. Retrieved 2022-07-24. Together, they've created viral pop-hits like "The Feels," "Alcohol Free," and "I Can't Stop Me." Their latest album Formula of Love: O+T = <3, was released earlier this year to critical acclaim, and quickly became a fan favorite with millions of streams worldwide.
  30. ^ Herman, Tamar (November 15, 2021). "Twice's album Formula of Love: O+T=<3 explores love in all its glory". South China Morning Post. Archived from the original on November 16, 2021. Retrieved November 16, 2021.
  31. ^ Kim, Young-dae (February 21, 2022). "마침내 찾아낸 궁극의 레시피 – TWICE [Formula of Love: O+T=<3]" [The Ultimate Recipe, Finally Found – TWICE [Formula of Love: O+T=<3]]. Rolling Stone Korea (in Korean). Retrieved February 22, 2022.
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