CassCool sells out in 45 seconds before Hyorisoo's first stage
2026 CassCool Festival sells 2,000 early bird tickets in 45 seconds, with Hyorisoo's debut stage and MONSTA X's full-group set confirmed.
2,000 Early Bird Tickets Sold Out in 45 Seconds
The ticket power of major music festivals targeting the summer season is extraordinary. All 2,000 early bird tickets for the '2026 CassCool Festival,' hosted by OB Brewery's Cass, sold out in just 45 seconds after sales began.

Sold exclusively through the resale platform KREAM on the 2nd, these tickets proved their immense popularity by ranking number one in KREAM's first week of July sales. Despite increasing the ticket volume to 2,000 compared to previous years, consumer response was explosive. Ticket reservations are currently ongoing through KREAM, Naver Booking, and NOL tickets.
The festival will take place on August 22 at the Seoul Land outdoor stage in Gwacheon, Gyeonggi-do. Having grown in scale every year, the CassCool Festival saw approximately 15,000 attendees in 2024 and about 20,000 visitors last year.
Hyorisoo's First Stage and MONSTA X Full Group Lineup
The lineup spans various genres, from K-POP to Rock and EDM. The true highlight is the appearance of Hyorisoo, a unit from Girls' Generation. Hyorisoo will take the official stage for the first time since their formation through this festival.
MONSTA X, who performed as the unit 'Shownu X Hyungwon' last year, will meet the audience this year as a full group. Highlight has also confirmed their third appearance this year, continuing their connection with the CassCool Festival. Other artists in attendance include Touched, Sandara Park, Lee Changsub, and QWER.
A Brand Festival Combined with a Water Show
The 2026 CassCool Festival combines musical performances with a water show to be enjoyed alongside refreshing Cass beer, along with diverse experiential content. A key feature is the planned water performance designed to let the audience feel the refreshing essence of summer with their entire bodies.
A representative from the Cass brand stated, "Through an artist lineup covering various genres and diverse content, we will present Cass's unique refreshing energy and a differentiated festival experience."
In addition to the artists currently announced, further lineup details and specific program information will be released sequentially through the official Instagram and website.