Harmonic pitches produced by the division of strings were known in China. They may have been used to tune sets of bells or stone chimes, but the classical writings on music discuss a 12-tone system in relation to the blowing of bamboo pipes (lü). The first pipe produces a basic pitch called yellow bell (huangzhong).
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Answer:
Harmonic pitches produced by the division of strings were known in China. They may have been used to tune sets of bells or stone chimes, but the classical writings on music discuss a 12-tone system in relation to the blowing of bamboo pipes (lü). The first pipe produces a basic pitch called yellow bell (huangzhong).