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Iberê Thenório on Twitter: "Afinal de contas, o dó central do piano é C3 ou C4? As referências são contraditórias. :-( https://t.co/n2e2eBxpXI" / Twitter
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Do Central en Fl Studio C5 y Do Central en un piano real C4 : Teoría Musical y Composición | Hispasonic
Portion of the music keyboard. Middle C on the piano is C4 and A4 is... | Download Scientific Diagram
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