If asked which instrument most people would like to be able to play, their answer will likely be the piano. Whether they know it or not, this is because the piano has the broadest range of any instrument. Because of this range, music for all other instruments can be composed on a piano.
Also the most technically complicated musical instrument, the piano has over 2,500 parts. Several of those parts require thermal processing to produce them or to make them better. We will look at a few of these, including the cast iron plate and the strings. Before doing that, however, let’s consider the history of the instrument.