What’s My Name?

This is a very fun game.
It is called “Who Knows What’s My Name?”

I am played with a bow,
And my sound is low.
I am very tall.
You might see me in Carnegie Hall.

I usually play the harmony
In many, many songs.
I am in the wood string family;
Yes, that is where I belong!

I have a scroll;
It looks like a whirly whirl!
I have four strings to play;
They are named C, G, D, and A.

Do you know what I am? Yes or no?
If you guessed a cello, then you’re a smart fellow!