Are C♯ and D♭ same? Interval & Octave explained: Music & law of frequencies

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Published on January 26, 2023 2:00:00 PM ● Video Link: https://www.youtube.com/watch?v=-F12ugKuCaM

Duration: 14:10

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Octave is derived from a word that means eight. Why are there twelve notes? Why are there no black keys between E and F, and between B and C? Why is there only a single key for both sharp and flat? Why does the concept exist?
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