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In an Octave or Perfect Eighth, there are 12 ( 13 if you count the eighth).

For scales that begin on white keys, there are always 8 white keys and 5 black keys in a single full octave. For scales that begin on black keys, there are always 6 black keys and 7 white keys in a single full octave.

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13y ago
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13y ago

There are 13 in the compass from C to C.

The above is true according to common understanding of western musics. But there are 14 if you consider the analysis of the octave as given in "divine octave music", considered by some to be "true music".

It remains that the question is "How many keys are there in an octave on a piano?" The answer to that question is 13, whatever other kinds of instruments or systems there are. 14 may be the answer to another question, but it is not the answer to this one.

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13y ago

Well that depends what key you're in. If you're in C you would go the next C up.

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12y ago

There are thirteen notes in an octave.

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14y ago

there would be eight octaves

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11y ago

Five black, seven white.

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Q: How many keys are there in an octave on a piano?
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Related questions

How many keys are there in an octave on a 50 key piano?

An octave is always 8 white keys and 5 black keys.


How many white keys are in an octave on a piano?

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How many black keys are on a 6-octave piano?

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Hom many black keys would be on a 72 key piano?

There are 7 octaves on a standard grand piano (plus a minor third, or one additional "black key"). If each octave has 5 accidentals (or black keys) then 7 octaves would have 35 black keys, plus the additional B Flat at the bottom of the piano.....so: A 72 key piano has 36 black keys.


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