 These musical theories, instruments, and styles imported came to shape much of traditional Japanese Music known today.Though much of Chinese music and music theory was re purposed for distinct Japanese styles, it still held on to many of the core elements of Chinese traditional music of the time.The standard theory imported from China consisted of an octave scale with twelve pitches derived from the circle of fifths During the Edo Period, Japan was shut off from the rest of the world, many different new musical styles arose from this isolation and shaped modern Japanese Music.