Music festival in Western Japan held during Golden Week [2026]

“GRAND SLAM” is an urban circuit festival held over four days during Golden Week across Diamond Hall and SPADE BOX in Shinsakae, Nagoya. The name—evoking a bases-loaded home run in baseball and the four majors in tennis and golf—reflects a commitment to a schedule with no overlaps, allowing audiences to see every performer. Presented by Sunday Folk Promotion, it will take place in May 2026. For the first time, all-day passes and U-22 tickets will be offered, opening up the music experience to younger generations.

This is a student-led street live performance where high school light music clubs from across Shiga Prefecture gather at Otsu Station Front Park to showcase the results of their daily practice in the station-front space. Organized by the Keion Street LIVE Executive Committee and co-hosted by the Shiga Prefecture High School Cultural Federation Light Music Division, the event has continued in collaboration with Machizukuri Otsu. This time, as Vol. 18, a live performance of the Inter-High support song is also planned. Scheduled for May 2026, it offers a close-up chance to enjoy the regionally rooted high school band culture.