'Mommy's Song'

This morning Fletcher composed a song for me:

"Mama, back in old western times
You did not exist
But I think you're the best mom ever.
And I love you so much, Mommy.

Mama, back when dinosaurs lived
You did not exist
But I think you're the best mom ever.
And I love you so much, Mommy."

How wonderful is that! He accompanied himself with guitar and wanted to me to write down the musical notes as well but I do not know how to write/read music. Fletcher proceeded to tell me how to write music. How does he know these things?

I have the sweetest boy ever!