Demetori

Demetori is a Japanese instrumental progressive metal duo consisting of twin brothers Masaru and Tadashi Teramae. Since 2004, they have become a cornerstone of the 'doujin' music scene, specifically within the Touhou Project arrangement community.

Their sound identity is defined by a marriage of neoclassical power metal, symphonic arrangements, and progressive structures. Unlike many of their peers who lean into lo-fi or bedroom production, Demetori is noted for exceptionally high production values, characterized by dense layering and digital clarity. Their career arc shows a steady progression from straightforward power metal arrangements to increasingly complex, multi-movement compositions that incorporate elements of jazz fusion and technical death metal drumming. Critically, they are regarded as one of the most technically proficient acts in the instrumental metal space, often cited alongside western acts like Dream Theater or Galneryus for their instrumental prowess. They occupy a unique cultural position as a bridge between the niche world of game music arrangements and the broader global progressive metal community.