CORTIS: The Rising K-Pop Sensation Making Waves in 2026

CORTIS, the innovative K-Pop group under BIGHT MUSIC, has quickly risen to fame since their debut in August 2025. With a unique blend of talents and a commitment to creative expression, they have achieved remarkable success, including chart-topping EPs and historic performances. As they prepare for their debut at Lollapalooza in 2026, CORTIS continues to redefine the K-Pop landscape, making them a group to watch in the coming years.

By Narendra Chaudhary May 20, 2026, 16:28 IST

Introduction to CORTIS

Launched under BIGHT MUSIC, a subsidiary of HYBE, CORTIS made its official debut in August 2025. The group comprises five talented members: Martin, James, Juhoon, Seonghyeon, and Keonho. They are recognized for their active involvement in songwriting, choreography, and overall creative direction. Each member brings unique skills and backgrounds, contributing to the group's distinctive DIY and global music style. Martin leads the group and is known for his production skills, while James, the eldest, excels in performance. Juhoon serves as the lead rapper and vocalist, with Seonghyeon and Keonho, the youngest member, adding visual appeal to the ensemble. Unlike many traditional idol groups, CORTIS embraces a more alternative and Western-influenced pop identity.

Debut and Recent Achievements

Debut and recent success

The dynamic five-member group launched their debut EP, Colour Outside the Lines, featuring the hit track, What You Want. They made an impressive entry at number 8 on the World Albums chart, quickly ascending to the top position the following week. Their debut EP continues to soar, maintaining the 6th position in its 35th week on the charts. Additionally, their second EP, GREENGREEN, made a remarkable debut at number 3 on the Billboard 200, marking them as the fastest K-Pop act to reach the Top 3 in recent years, excluding project-based groups. GREENGREEN also debuted at number 8 on the World Albums chart before climbing to the top in its second week. The lead single, REDRED, has gained traction by entering the Billboard Bubbling Under Hot 10 at No. 17, making them the first K-Pop boy group to achieve this milestone within just nine months of their career.

CORTIS in 2026

2026 Line-ups for CORTIS

CORTIS is expanding its influence beyond music charts, having headlined the opening night of the NBA Crossover Concert series, becoming the first K-Pop group to do so. They also performed at the All-Star Game Halftime show the following day. Looking ahead, CORTIS is set to be the only K-Pop boy group to debut at Lollapalooza in Chicago this August 2026, sharing the stage with artists like Charli XCX, Tate McRae, and Lorde. The group's name, derived from the phrase “Colour Outside The Lines,” reflects their commitment to pushing creative boundaries, as emphasized by their label.