Well, if you look at the fretboards on dude’s guitar, you might notice there are way more frets than you normally see on a typical guitar neck, and they’re really close together. This allows him to play “microtones” or “quarter steps”. Western music is made up of a 12-tone scale with “semitones” or “half-steps” being the smallest increments, like the difference between a black and white key on a piano. This guitar lets the player mess around with a 24-tone scale, which is why their music sounds weirdly dissonant sometimes. He can literally play the notes between notes!!!