This is a really simple song that makes great use of vocal layering and Bjork's song 
Melendez

           
I’ll no longer

        
 hide it;
           
Yes you move m

        
e to tears ove

r and over
           
Every time I g

        
et it settled 

you excite it
           
Every time I g

        
et my face dry

 you sing:

“It’s not meant to be a strife,
It’s not meant to be a struggle uphill”
(continue chorus throughout)

Now I know I’ll no longer fight it
“Come on in little floating head. The door”
Who are you? Who are you? Who has come to fill this room?
Well, come on welcome in.

I’ll no longer hide it;
Yes the way you say it stirs me to the core
Every time, no matter what, no matter who I think you are
Every time I hear you say “undo”, I do
And the tears fall, and the universe is shown
But who are you, voice in headphones?