Not all pianos have 88 keys, although most modern pianos do. Pianos have roughly 88 keys because of the reach of the the player. Early pianos often had 85 keys. There was pressure to standardise on a number because composers wouldn't want to to write for keyboards if not all pianos could play them. Some modern keyboards have extra keys; usually these are hidden under a flap that can be raised if required - some jazz players like to have the extra bass notes. Having the extra notes also adds resonounce to other (conventional) bass notes.
88 KEYS on a Piano
There are 88 keys on a piano (52 white keys and 36 black keys).
A normal piano has 88 keys. A "Cottage piano" has 64 keys. The 7'4'' Bosendorfer has 92 keys. The 9'6'' Bosendorfer has 97 keys. Standard pianos have 88 keys.
eighty-eight
The piano has a total of 88 keys.
88 Piano Keys
88 KEYS on a Piano
something about 88 piano keys
88 keys on a piano.
There are 88 keys on a piano (52 white keys and 36 black keys).
A normal piano has 88 keys. A "Cottage piano" has 64 keys. The 7'4'' Bosendorfer has 92 keys. The 9'6'' Bosendorfer has 97 keys. Standard pianos have 88 keys.
There are 88 keys on a piano.
eighty-eight
88 Keys on a piano keyboard.
The piano has a total of 88 keys.
88 keys on a standard piano, upright and grand.
88 keys