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Seven white keys and five black keys form an octave. As you already know, now pianos have 88 keys, that is, 7Â¼ octaves. As a rule, there are 52 white keys and 36 black keys on a regular piano. However, not only standard 88 key pianos are used now. Some well-known piano makers produce instruments with different number of keys. For example, there are 92 of them in BÃ¶sendorfer 225, and even 97 keys in BÃ¶sendorfer 290.
Did you mean: piano keynotes. 1  Piano and Keyboard Music Note Full Set Stickers for White and Black Keys with Piano Songs EBook & User Guide; Transparent and Removable! 2  Practice Keyboard & Note Chart for Behind the Piano Keys. 3  Piano Stickers for Keys â Removable w/ Double Layer Coating for 49 / 61 / 76 / 88 Keyboards.