My Mom and Dad sang this song using 'Pine Tree' instead of 'Oak' most of the time. (We lived in the Piney Woods)

I see the moon and the moon sees me.
Way up there in the old Pine Tree.
And with the light that shines on me,
Shines on the one I love.

Over the mountains, Over the seas
Back where my heart is yearning to be.
And with the light that shines on me
Shines on the one I love.