Question

why sound produced by different bodies differs?​

Answer 1

Answer:

The sound produced and vibrations produced are different and not on the same page. Hence, the different instruments vibration for the same tune would produce different kind of sound which makes every instrument different from each other.

Answer 2

This happens because with every single frequency, called fundamental frequency, many other frequencies, known as harmonics, are also generated with differing loudness. The quality of sound is determined by the frequencies present in it and their relative loudness.