0_Apprentice
I want to learn an instrument, and am thinking about the piano.  Is that a good choice?
1_Wizard
Yeah you will like it. It is a stringed musical instrument invented in Italy in 1700s.
0_Apprentice
The piano is a stringed instrument?  Where are the strings?
1_Wizard
Strings are connected to hammers that are connected to a row of keys. It is played using a keyboard.
0_Apprentice
Wow I would have never considered the piano a stringed instrument.  Are there any other interesting pieces to it?
1_Wizard
The loudness of the strings is controlled by the force in pressure on the keys. The greater the velocity, the louder the sound.
0_Apprentice
yeah that makes sense.  What are the foot pedals for?