How to use "piano" in a sentence

Sentences

He was playing the piano.

The Captain left the piano and went out of the room

I listened to him playing the piano, and I thought I heard him say.

Valjean had gone away on business for a couple of days, and Cosette was in the downstairs sitting room, playing the piano.

Someone said, "Shoot the piano player."

When Uncle Podger climbed up on the chair, he fell on the piano