Simple notation refers to simple notation, including letter notation and number notation. Universal notation refers to the numerical notation, which is based on the moving roll call method, with 1, 2, 3, 4, 5, 6 and 7 representing the seven basic levels in the scale, with the pronunciations of do, re, mi, fa, sol, la and ti (si in China), and English is composed of C, D, E, F and F.

Simple symbol related words

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