The violin is the smallest, and plays the highest notes.
It has 4 strings.
You can use a bow or pluck the strings.
There are more violins in the orchestra than any other instrument.
It usually plays the melody.
It is held under the chin on the shoulder.
The string bass or double bass is largest and sounds the lowest.
It has 4 strings.
You can use a bow or pluck the strings.
The bass is played while standing, or sitting on a very tall stool.