What's this?
This is a keyboard.
What are these?
These are drums.
What's this?
This is a piano.
What's this?
This is a flute.
What's this?
This is a violin.
What's this?
This is a xylophone.
What's this?
This is a trumpet.
What's this?
This is a harmonica.
What's this?
This is a harp.
What's this?
This is a guitar.