Main Parts of an Acoustic Piano

• Keyboard: the player’s control surface.
• Action: the lever system connecting keys to hammers and dampers.
• Hammers: felt-covered components that strike the strings.
• Strings: higher notes use shorter, thinner strings; bass strings are longer and commonly copper-wound.
• Plate or frame: supports the enormous combined string tension.
• Bridge and soundboard: transmit and amplify vibration.
• Dampers: stop most strings when keys are released.
• Pedals: alter sustain, color, or practice volume.

How Many Keys Does a Piano Have?

Most full-size modern pianos have 88 keys—52 white and 36 black—covering a little more than seven octaves. This is a common standard, not a definition of every piano. Smaller keyboards may have 61, 73, 76, or other counts; a few concert grands extend beyond 88.

For classical study and advanced repertoire, a weighted 88-key keyboard is normally the safest long-term choice. For portability, production, or limited space, fewer keys may be practical if the reduced range suits the music.

What Do the Pedals Do?Right pedal: sustain or damper pedal

Lifts the dampers so played strings continue vibrating after the fingers leave the keys. It also allows sympathetic resonance from other strings.

Left pedal: soft pedal

On a grand piano, the una corda mechanism shifts the action sideways so the hammers strike fewer strings or a different part of the felt. On many uprights, the mechanism moves the hammers closer to the strings. The acoustic effect is therefore not identical.

Middle pedalOn many grand pianos, the sostenuto pedal sustains only notes already held when the pedal is engaged. On many uprights, the middle pedal instead operates a practice mute or another maker-specific function. Always check the instrument.