In a surprising development that has captured widespread attention in the K-pop industry, I.O.I’s track “Suddenly” has achieved an impressive feat by breaking a long-held record on one of South Korea’s major music platforms. The song recently secured its 31st consecutive day at the No. 1 position on the MelOn Daily Chart, officially surpassing the previous benchmark set by BLACKPINK’s “DDU-DU DDU-DU.” This accomplishment establishes I.O.I as the third-generation girl group with the longest streak of daily No. 1 rankings on MelOn to date.
The record that stood for nearly eight years — approximately 2,906 days — was originally set by BLACKPINK in 2018. “DDU-DU DDU-DU” dominated the MelOn Daily Chart for 30 straight days, forming part of an extraordinary run that highlighted the group’s dominance during their peak period. For fans and industry observers alike, seeing a comeback track from I.O.I topple this milestone after such a long time underscores the enduring appeal of well-crafted music and dedicated fan support, even for groups with relatively brief active careers. This breakthrough has sparked fresh discussions about the legacies of both acts within the competitive landscape of third-generation K-pop.
The Journey of Two Iconic Tracks and Their Chart Battles
“DDU-DU DDU-DU” was far from an ordinary release when it dropped in 2018 as the title track of BLACKPINK’s mini-album Square Up. The song created an immediate sensation, achieving an All-Kill status across seven major Korean charts within just two hours of its launch. It went on to earn Perfect All-Kill recognition on iChart for multiple days, led the Gaon Digital Chart for three weeks, and remained in the top 100 for over 50 weeks. Its music video also shattered viewership records, eventually surpassing 2.3 billion views and cementing its status as a defining anthem of the third-generation K-pop era. The track’s powerful beats, confident attitude, and memorable choreography helped BLACKPINK solidify their position as a global force.
In contrast, “Suddenly” serves as the lead single from I.O.I’s special mini-album I.O.I: LOOP, released to celebrate the group’s 10th anniversary. The song made its debut on May 19, marking the highly anticipated reunion of the project group originally formed through the first season of Produce 101. Initial reactions to the release were mixed. Some listeners felt the synth-pop style sounded somewhat dated and out of step with current K-pop trends, while others noted that the music video appeared relatively simple, lacking the elaborate production values expected for such a milestone comeback. On the MelOn TOP100, the track even started at a modest No. 100 position shortly after release.
However, the situation changed dramatically once I.O.I began active promotions. As the members returned to music shows and live stages, “Suddenly” steadily climbed the rankings. It moved from outside the top tier into the top 10 and eventually challenged for the top spot. By 8:00 AM on May 29 (Korean time), the song achieved its first Real-time All-Kill, topping all major real-time charts including MelOn, Genie, FLO, and Bugs. Since then, it has maintained strong momentum, holding the No. 1 spot on the MelOn Daily Chart for 31 consecutive days. This sustained performance highlights how live promotions and genuine audience connection can transform a song’s trajectory, turning initial skepticism into widespread support.
I.O.I’s Lasting Legacy and the Significance of Their 10-Year Reunion
I.O.I first debuted in 2016, emerging from the Produce 101 survival program with a lineup that quickly won the hearts of Korean audiences. Despite their short official activity period — disbanding in early 2017 after less than a year — the group left an indelible mark through hits such as “Dream Girls,” “Whatta Man,” “Very Very Very,” and “Downpour.” Their music embodied youthful energy and emotional depth, resonating deeply with fans who appreciated the members’ individual charms and group chemistry.
This recent achievement is not the first time I.O.I has been compared to BLACKPINK in meaningful ways. Back in 2016 at the MAMA Awards, I.O.I took home the Best New Female Artist award during a season when BLACKPINK was also making strong waves as rookies. Nearly a decade later, the two third-generation groups find themselves side by side again, this time through “Suddenly” overtaking one of BLACKPINK’s most celebrated digital records. Such comparisons celebrate the evolution and continued relevance of artists from that era rather than diminish either side.
The 10th anniversary project was thoughtfully structured as more than just a one-off single. I.O.I released the I.O.I: LOOP mini-album, promoted “Suddenly,” and embarked on a concert tour under the same name. These activities, though limited in number, demonstrated meaningful commitment. The tour concluded after a show in Hong Kong, bringing the official anniversary celebrations to a close while leaving fans with new music and memorable performances. For a project group that was never intended for long-term activity, the ability to reunite, deliver fresh material, and sustain chart dominance for over a month speaks volumes about their lasting brand recognition and emotional connection with the public.
The success of “Suddenly” serves as powerful proof of I.O.I’s enduring influence. Even after ten years since their debut and a short initial run, the group continues to command attention and affection in the K-pop world. By breaking a record held by one of the era’s most successful acts, “Suddenly” has not only highlighted the song’s quality but also reinforced I.O.I’s place among notable third-generation girl groups. It reminds listeners that meaningful impact in music often transcends chart longevity or commercial scale, rooted instead in authenticity and the special bond between artists and their supporters. This milestone adds a compelling new chapter to the story of both I.O.I and the broader K-pop narrative of legacy and resurgence.
