what is that instrument called?(钢琴）

what is that instrument called?(钢琴） What is that instrument called? What is that?An old instrument.I_it in my grandpa's box.A.se That is called What is it called? what is called 造句~ what is called love? what is called flu? what is he called? What’s that instrurments called? That is what's called cumulonimbus 为什么不是what cumulonimbus is 这句That is called