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The Challenge: Make musical instruments

If producing a note is so simple, why do the sounds made by each instrument in an orchestra or band sound so different?

The pitch is the degree of highness or lowness of a musical note. The pitch depends on how rapid the vibrations are; i.e., how high the frequency is. A higher pitch has a higher frequency.

Low and high waveforms

The diverse sounds made by the instruments in each section of an orchestra are due to harmonics. These are higher and quieter sounds that are mixed in with the main note. They are not heard separately but add to the tone of the sound.

Harmonic Series for a Guitar String
N - Node - AN - Anti-node

Harmonic series of a guitar string