Going down an octave usually requires double the string length.More keys created several logistical challenges. Overtime the number of keys increased as composers demanded more out of the instrument. The following video gives a brief history and playing of the earliest preserved piano. Notice how twangy it sounds it is similar to the sound of a harpsichord. The earliest versions had 49 keys and a very different sound. The first piano was developed by Bartolemeo Cristifori in the 1720’s. The same process can be done to find the number of octaves in a smaller or larger piano. 88/12 = 7.33 rounding down we have 7 complete octaves. 49 note c c keyboard full#There are 12 notes in an octave so by dividing 88 by 12 and rounding down you get the number of full octaves on a standard piano. Here is a full chart that shows the number of keys, the number of black keys, and the number of white keys on a piano: There are 36 black keys on a regular 88 key piano. There are some grand pianos that have more than 88 keys, even up to 108, but this is extremely rare (more on that later). Often keyboards, or electric pianos, will come in smaller sizes ranging anywhere from 24 – 88 keys. This became the norm shortly after the 1880’s as the steinway family developed 88 key instruments. What led to this stable number, and is this number likely to change? By the end of this article you should know not only the number of keys on a piano, but also how the piano evolved to that number, and the ideal piano size for your skill level.įor a short answer, the number of keys on a piano is 88 for a standard acoustic (grand or upright) piano. Since the late 1800’s the number of keys has remained about the same. The piano has been around for several hundred years.
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