The First Thing

In the shadows
there are dark souls
There are fireflies
And your heart beats
like a crystal
in the shadows
And you feel some
of the footsteps
it’s like a cold wind

Instrumental

And the first line
that you think of
is the key line
It will open up
It will shed some light
You can breathe again
But I’m confused by
This makes no sense
So what’s the difference?