HELP!! How do the materials an instrument is made of change its timbre? What causes the difference?

Timbre in music means the quality of a sound . Pertaining to an instrument's material and its relation to timbre varies. One would be the size of the instrument, i.e. the bigger the instrument, the lower the pitch the instrument can resonate. Additionally, brass has its own characteristic tone where most of the time, it would be bright (sharp, unpleasant) if not controlled and developed. Same goes for wooden, plastic, and percussion instruments. Wooden is traditionally more pleasant and suited for wind ensemble. Plastic is for has less quality in its timbre but is suited for beginners, and percussion instruments is generally the same with wind instruments, but they don't require air, but vibration by striking. Fun fact, a piano is a percussion instrument!

Explanation:

earliest

neumes above text

neumes

colored lines

neumes

4-line staff

f, c, or g clef

notes on 5-line staff with clef

mensuration (longas and breves)

time signature (perfect or half circle)

most recent

notes on 5-line staff

modern clefs

modern note values (whole, half, quarter, and so on)

modern time signature

italian words and abbreviations for dynamics and tempo

staccato, slurs, and so on

the string with the finger instead of using the bow