keyboard; key array; piano keys
Most commonly refers to the keys of a piano, organ, synthesizer, or other keyboard instrument. It can also refer to the key array of devices such as a typewriter, though modern computer keyboards are usually called キーボード.
I placed my fingers on the piano keys.
One key on the old typewriter keyboard does not move.
She played the piano keys elegantly.
The child hit the keys as hard as he could.
I touched piano keys for the first time.