Which musical instrument has 88 keys?

The musical instrument with 88 keys is the piano.

A standard modern piano has 88 keys: 52 white keys and 36 black keys. They cover a range of seven octaves plus a minor third, from A0, the lowest note, to C8, the highest. Each key activates a mechanism that makes a felt-covered hammer strike one or more strings, although digital pianos produce their sound electronically.

The 88-key layout became standard during the late nineteenth and early twentieth centuries as piano makers expanded the instrument’s range. Earlier pianos often had fewer keys, while some modern concert and experimental instruments have more than 88. The 88-key design is therefore standard, not an absolute limit.

The piano is often confused with instruments such as the organ, which may have multiple keyboards, or the keyboard, a broad term covering electronic instruments with many different key counts. A typical acoustic piano’s lowest key is A0 and its highest is C8, giving composers and performers a wide range for melody, harmony, and bass.