Random Riddle: That’s Not Me

You hear my sound; But that’s not me
In fact, we look quite differently
I can have one; it always has two; I can have three
It can be anywhere, but I like sitting in a tree
It comes in many different forms
But I usually come in one
I have an assortment of colors
But eat me & I’m done
It can represent a bond
I can be used to jam
Can you figure out
What it is & what I am?
 
Random Riddle: That's Not Me