Polishing the blue guitar

I've been admiring this guitar in the music shop window but on its own it seemed to make a dull image. As I passed by today the shop owner was cleaning the window and suddenly it was a blip...

Wallace Stevens' poem The Man with the Blue Guitar was said to have been inspired by Pablo Picasso's painting The Old Guitarist

Here are the first 3 cantos of the poem.

The man bent over his guitar,
A shearsman of sorts. The day was green.
They said, "You have a blue guitar,
You do not play things as they are."
The man replied, "Things as they are
Are changed upon the blue guitar."
And they said to him, "But play, you must,
A tune beyond us, yet ourselves,
A tune upon the blue guitar,
Of things exactly as they are."

I cannot bring a world quite round,
Although I patch it as I can.
I sing a hero's head, large eye
And bearded bronze, but not a man,
Although I patch him as I can
And reach through him almost to man.
If a serenade almost to man
Is to miss, by that, things as they are,
Say that it is the serenade
Of a man that plays a blue guitar.

A tune beyond us as we are,
Yet nothing changed by the blue guitar;
Ourselves in tune as if in space,
Yet nothing changed, except the place
Of things as they are and only the place
As you play them on the blue guitar,
Placed, so, beyond the compass of change,
Perceived in a final atmosphere;
For a moment final, in the way
The thinking of art seems final when
The thinking of god is smoky dew.
The tune is space. The blue guitar
Becomes the place of things as they are,
A composing of senses of the guitar.