Koji Brash is a Japanese guitarist, vocalist, songwriter, producer, and multi-instrumentalist known for his diverse creative work across music, film, gaming, and motorsports. Active throughout Japan, the United States, and the United Kingdom, KOJI has built an international reputation through his energetic performances, melodic songwriting, and genre-blending rock style.
While performing primarily as a solo artist under the name KOJI, he also serves as vocalist and guitarist for BRASH☆BEAT and handles guitar and drums for the band BrighNation!, a project he personally produces.
KOJI’s album NW8 was recorded at the legendary Abbey Road Studios in London and released first in the United Kingdom, where his UK tour attracted significant attention from local media and international audiences.
Beyond his own music, KOJI has composed the entrance theme for New Japan Pro-Wrestling faction “United Empire,” while also contributing music to films and video games and appearing in movies himself. His wide-ranging creative career continues to expand through collaborations with artists and creators around the world.
Outside of music, KOJI is also deeply involved in motorsports, holding a Class A racing license and actively participating in racing events while contributing as an interviewer for automotive magazines.
Known for expressive guitar work, melodic phrasing, and dynamic live performances, KOJI relies on S.I.T. Strings for their feel, sustain, clarity, and responsiveness.
