The landscape of domestic music broadcasts is famously known as an ultra-competitive battleground where tracking charts flip completely from week to week. Yet, independent powerhouse CORTIS has shattered the traditional blueprint.
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With the explosive release and sustained digital velocity of their smash hit, "REDRED" (also stylized as "RED RED"), the group has managed a historic feat that very few acts ever achieve: a phenomenal, uninterrupted five-week residency at the absolute top of the weekly music show charts. Spanning from late April through the end of May 2026, the group fought off successive comeback waves from some of the biggest entertainment labels in the industry to claim total chart dominance.
The Chronology of a 5-Week Music Show Sweep
To fully appreciate the sheer scale of the "REDRED" era, one only has to look at the caliber of artists CORTIS successfully out-paced on the weekly rankings:
- Week 18 (April 27 – May 03): The Breakthrough Ignition
CORTIS officially launched their chart siege on Wednesday's Show Champion, securing the top spot directly over high-profile releases like &TEAM’s high-energy track "WE ON FIRE". Even as NCT WISH sweeping through the weekend broadcasts with "Ode to Love", CORTIS had firmly planted their flag.
- Week 19 (May 04 – May 10): Weathering the Rookie Onslaught
As the new month kicked off, competition reached a fever pitch. CORTIS held their ground on Wednesday's Show Champion, successfully keeping ahead of massive powerhouse drops including NEXZ’s "Mmchk", AKMU’s beautifully textured "Paradise of Rumors", and the double-weekend threat of TWS's runaway hit "You, You".
- Week 20 (May 11 – May 17): The Historic "Grand Slam" Clean Sweep
This specific frame will go down in fandom history as the absolute peak of CORTIS's broadcast dominance. In a rare display of complete consensus across domestic television networks, CORTIS achieved a flawless, multi-day sweep—taking home the trophy on Show Champion (Wednesday), M Countdown (Thursday), Music Bank (Friday), Show! Music Core (Saturday), and Inkigayo (Sunday).
- Week 21 (May 18 – May 24): Defending the Crown Against Titans
The true test of longevity arrived when industry heavyweights entered the tracking ring. Despite a massive, highly praised comeback rollout from JYP Entertainment’s NMIXX with their powerful Heavy Serenade era, CORTIS pulled off an incredible defensive victory, holding onto their top rankings on both Friday's Music Bank and Saturday's Show! Music Core.
- Week 22 (May 25 – May 31): The Grand 5-Week Finale
Closing out the month, the tracking charts witnessed an epic clash of titans. Even with the immense digital and physical scoring power of ZEROBASEONE sweeping the early part of the broadcast week alongside NCT's Taeyong and his solo track "WYL" on Friday, CORTIS delivered a spectacular final stand. They claimed the crown on both Show! Music Core and Inkigayo, officially wrapping up a rare five-week chart monopoly.
Behind the Numbers: Why "REDRED" Became an Unstoppable Force
The continuous success of CORTIS across these five grueling tracking weeks highlights a massive shift in their global and domestic market positioning. Music show wins heavily rely on a complex matrix of digital streaming numbers, physical album distributions, global fan voting apps, and broadcast frequency.
For "REDRED" to consistently out-score fresh, highly anticipated releases week after week proves that the track transformed from a standard comeback into a certified viral phenomenon. The group's unyielding domestic streaming longevity combined with a highly mobilized, passionate global voting base allowed them to continuously offset the massive physical numbers brought in by major agency rivals.