Why fromis_9's "FUN" Became a K-pop Summer Anthem in 2019

"We just wanna have some fun!" With these simple yet infectious lyrics, fromis_9 captured the essence of summer 2019 through their energetic single "FUN!" Released on June 4, 2019, as part of their second single album "Fun Factory," the track showcased the group's signature upbeat sound while marking an important evolution in their musical journey.

Despite receiving mixed reviews upon its release, "FUN!" quickly distinguished itself in fromis_9's discography with its relentless tempo and vibrant energy that perfectly matched the group's dynamic performance style. Available in two physical versions aptly named "Fun" and "Factory," the single album contained three tracks with the title song embodying the carefree spirit that fans had come to love from the nine-member ensemble. While some critics noted that the song departed from the refined dance-pop style of their previous hit "Love Bomb," this shift actually helped establish "FUN!" as a distinctive summer anthem that highlighted the group's versatility and charm.

The comeback that defined summer 2019

Fromis_9 debut date and rise to popularity

Initially formed through the survival program Idol School, fromis_9 made their official debut on January 24, 2018, with their first mini-album "To. Heart". The group received significant recognition from the start, with their debut release reaching number 4 on the Gaon Album Chart. This strong debut established fromis_9 as a promising new act in the competitive K-pop landscape.

The announcement and teaser rollout of 'FUN!'

Following an eight-month hiatus after their special single album "From.9," excitement built when several music industry sources confirmed on May 22, 2019, that fromis_9 would return with new music on June 4. The group's agency quickly verified the news, noting that preparations were in their final stages.

The promotional campaign officially began that same evening with the release of a fizzy orange soda-themed prologue video featuring the memorable lyrics, "Come on, girls, get on the floor, Fromis get set ready, show!". Subsequently, the group unveiled an impressive series of teasers throughout late May and early June. These included concept images released on May 23, followed by individual member video teasers from May 24 to June 2 featuring Jiwon, Saerom, Nagyung, Jisun, and Chaeyoung among others. The tracklist reveal confirmed "FUN!" as the title track, alongside two B-sides including "Fly High," co-composed by members Hayoung and Jiwon.

How 'FUN!' fit into the group's discography

"Fun Factory" marked a significant milestone as fromis_9's first single album. Notably, it achieved the group's highest chart position to date, reaching number 2 on the Gaon Album Chart. This release positioned itself as an important bridge in their discography, coming after "From.9" (2018) and before "My Little Society" (2020).

After concluding promotions for "FUN!," the group announced they would continue with additional performances of the B-side "Love RumPumPum" as a special gift for fans. This extended promotion period, along with appearances at KCON New York and Los Angeles that summer, cemented "Fun Factory" as the defining comeback that propelled fromis_9 into the spotlight during summer 2019.

Breaking down the sound of 'FUN!'

Genre fusion: bubblegum pop meets dance-pop

"FUN!" stands as a festive electro-pop track that masterfully blends multiple genres. On music platforms, the song is officially classified as a fusion of K-pop, bubblegum, contemporary R&B, and synth-pop. This eclectic mix creates what one reviewer described as "an electronic polka on crack", perfectly embodying the energetic summer sound fromis_9 was aiming to capture.

The production team, including AVENUE 52 and MELODESIGN, crafted a boisterous instrumental that prioritizes relentless tempo and vibrant energy. As the Northern Hemisphere prepared to welcome summer, "FUN!" arrived with increasingly effervescent colors and upbeat melodies, cementing itself as the quintessential summer anthem.

The polarizing chorus and its impact

Perhaps no element of "FUN!" sparked more discussion than its explosive chorus. Critics and fans alike found themselves divided—some describing it as "a jackhammer to the skull" or "incredibly shrill", whereas others celebrated it as "immediately addictive".

The chorus's downward spiral effect created a unique sonic signature that, regardless of reception, proved instantly recognizable. Even detractors admitted the song gave them "a visceral reaction", which ultimately contributed to its memorability among 2019's summer releases.

Notable parts: pre-chorus, rap, and bridge

Beyond its divisive chorus, "FUN!" featured several standout musical moments. The melodic pre-chorus emerged as a universal highlight, described by many as "a needed oasis" and "sort of like anticipation, like something magical is about to happen". Gyuri, Hayoung, Jisun, and Jiwon's voices particularly shined in this segment.

The second-verse rap section provided another bright spot, "riding the perky beat with addictive relish". Furthermore, the bridge received praise for its innovative structure—beginning as a breakdown before evolving into "a really interesting a cappella bit". This thoughtful construction featuring "low, rich piano, vocals, and delicate xylophone-like sound" created a perfect buildup to the explosive final chorus.

Visuals, choreography, and member highlights

Colorful concept and music video aesthetics

The vibrant "FUN!" music video stands out with its bold commercial-inspired concept, opening with a fizzy orange "Funta" advertisement featuring complementary orange and blue colors to immediately grab viewers' attention. Throughout the video, each fromis_9 member stars in her own playful TV commercial parody. Gyuri shines as a hair model for "Funsilk," leading an orchestra of other members, Seoyeon represents "Fromisnine" makeup, and Saerom glows for "Fr'óreal".

Additionally, the visual experience includes Jiheon and Hayoung selling "Fromi Sweat," Nakyung and Jiwon promoting "Clear&Clean," plus another commercial featuring Seoyeon and Saerom as sporty models for "Fromis" sportswear. One particularly memorable set shows the group dancing around a giant "Bomb Noodles" cup, tossing ingredients toward viewers as if bringing them into their magical recipe.

Relay dance and viral moments

Among all promotional content, the M2 Relay Dance for "FUN!" became especially popular, accumulating millions of views. Fans affectionately commented that the members' playfulness brought "peace to their hearts," calling them "adorable troublemakers" in the video's comment section. The relay dance format highlighted the members' individual personalities alongside their synchronized movements.

The choreography itself balances energy with precision, showcasing fromis_9's growing performance capabilities. Their dance style for "FUN!" emphasizes musicality—one of the five key components of fromis_9 choreographies alongside grouping, leveling, domino effects, and energy.

Standout performances by Jiwon, Saerom, and Chaeyoung fromis_9

Several members delivered particularly memorable performances in "FUN!" promotions. Jiwon's powerful vocals and charismatic center moments captured attention, especially in her narcissistic "In the mirror I'm so perfect" line. Saerom's elegant leadership presence anchored the group's stage performances, with her commercial parody receiving special praise.

Chaeyoung demonstrated remarkable growth, especially evident in formations where she faced the audience solo while other members created visual framing effects around her. The choreography cleverly used member positioning to direct audience focus to specific performers at key moments, creating visual interest beyond the already eye-catching outfits and set designs.

Reception, chart success, and legacy

Initial fan and critic reactions

Upon release, "FUN!" sparked immediate controversy among listeners and music reviewers. Critics were sharply divided—some described the track as "a jackhammer to the skull" and "actively repelled me on first listen", while others praised it as "loaded with colour and energy" and "very unique". The chorus became the most polarizing element, with detractors calling it "incredibly shrill" and enthusiasts celebrating its distinctive "downward spiral effect".

Online communities reflected this division as well. Reddit comments ranged from "I love the sensory overload in this song" to "This song gives me anxiety, everything was so hectic". Even those who initially disliked the song acknowledged that "familiarity brought an added appreciation for the song's unapologetic brashness", suggesting fromis_9's bold approach ultimately commanded attention.

Chart performance and sales figures

Despite the mixed reception, "FUN!" achieved respectable chart positions, entering at #89 on Melon—slightly outperforming their previous release "LOVE BOMB" which debuted at #98. The track simultaneously reached #30 on Genie and impressively charted at #3 on Bugs, with both B-sides "LOVE RUMPUMPUM" and "FLY HIGH" also appearing on the Bugs chart at #21 and #26 respectively.

The physical release performed admirably as well. "Fun Factory" recorded first-day sales of 7,421 copies, accumulating to 28,746 copies in its first week. First-month sales reached 54,986 copies, with total South Korean sales eventually reaching 61,257 copies—marking significant growth from their previous releases.

Why it became a summer anthem despite mixed reviews

"FUN!" established itself as a summer anthem precisely because of its distinctive qualities. Billboard recognized it as a "festive electro-pop track full of energy", highlighting its "color-popping music video" that showcased fromis_9's playful personalities. The song's "witty lyrics" and pop culture references—including a shout-out to Ariana Grande—further cemented its appeal.

Moreover, the track's divisive nature worked to its advantage. The "visceral reaction" it provoked meant listeners couldn't simply ignore it—they either loved or hated it, consequently generating buzz throughout summer 2019. As one reviewer noted, it was "an entertaining—yet a bit exhaustive—madness that takes your mind off all the problems", embodying the carefree spirit perfect for summer months.