Take the word 'heart' and unfold it.

heart
 earth
  arthe
   rthea
    thear
     heart

hearth
theart
heartheart
heartheartheart
heart|hear|the|art
hear|the|art|heart
hearth|earth|earth
hearth|heart|earth
hear|the|art|heart|h|earth

Hear the art, heart h`earth.
Hear the art, heart of the earth.

So basically you can form a whole sentence just by repeating the letters 'earth' in that order. However, the starting letter isn't important. It has a style that is somewhat similar to number games. No assortment of numbers is particularly important, save a few, such as 1.618 (or phi) and 144, which is harmonic. So using not just random letters but real words makes it seem pretty significant to me!

Now take the word 'earth' and unfold it.

earth
 arthe
  rthea
   thear
    heart

earth
heart
eartheart
earthearthearth
ear|the|art|hearth
earth|heart|hearth
ear|the|art|hear|th|earth

Ear the art, hear th`earth.
Ear the art, hear the earth.

Hear the art, heart h'earth.
Ear the art, hear th'earth.

Hear the art, heart of the earth.  
Ear the art, hear the earth.

Hear the art, heart of the earth. This makes me think of two things.

I would agree that art is the heart of the earth. Art is an expression of humans, who are of the earth. There is almost no limit to what shape and form art can take. Art is of and from the soul. It is a connection to the earth.

It also says hear the art, which could mean the Schumann Resonance. The Schumann Resonance is the base frequency, or the "heartbeat," of the earth. To me that is a form of art.

On another note, the Schumann Resonance has been rising recently.