How to make a single instrument fill up a sound spectrum?

1. Is there a spectrum for sound waves?
2. What difference would we hear if we altered the spectrum of sound for a particular musical instrument?

Is there a spectrum for sound waves?

(This is why sound waves are not typically considered part of the electromagnetic spectrum, since sound requires a medium—such as air or water—through which to propagate, whereas electromagnetic waves have little difficulty in radiating through the vacuum of space.)

What difference would we hear if we altered the spectrum of sound for a particular musical instrument?

If you change the pitch, the frequency of all of the components increases. If you change a sound without changing its loudness or its pitch then you are, by definition, changing its timbre. ... If you sing "ah" and "ee" at the same pitch and loudness, you will notice that there is a big difference between the spectra.