The triangle, an iconic percussion instrument, epitomizes simplicity with its design-a single metal bar bent twice to form a triangle. It's a familiar instrument to many, easy to play at a basic level yet possessing an unexpected depth of musical complexity. This piece is exclusively composed for the triangle, showcasing a variety of techniques that highlight its versatility and depth.
Building on the innovations introduced in its predecessor, "Triangler III," this composition incorporates even more intricate gimmicks, elevating its complexity and appeal. It has been crafted to captivate audiences whether performed in concerts or competitions, offering a listening experience that demonstrates the rich expressive potential of the triangle beyond its simple appearance.

(Daiya Hamaguchi)