The Singer

Singing, apparently, comes from the heart.
I can't bring myself to shout out loud
So I shout with a pen and paper.
I open my mouth little, but my hand
Traces out my heart, 
A script for the mute.

But singing comes from the heart.

And I wonder,
If I were to read out these words,
Would they still ring true?
If I were to shout these things
From my hand to the sky -

Can a singer write?
Because singing comes from the heart, does it not?