This is a favorite of mine from way back -- pentagonia requested that we discuss a Yeats poem ans i think that's a great idea. Let me start the ball rolling here by asking that you look at the use of repetition and to look at the musical nuances.

The Lake Isle Of Innisfree
   William Butler Yeats
 
I will arise and go now, and go to Innisfree,
And a small cabin build there, of clay and wattles made:
Nine bean-rows will I have there, a hive for the honey-bee,
And live alone in the bee-loud glade.

And I shall have some peace there, for peace comes dropping slow,
Dropping from the veils of the mourning to where the cricket sings;
There midnight's all a glimmer, and noon a purple glow,
And evening full of the linnet's wings.

I will arise and go now, for always night and day
I hear lake water lapping with low sounds by the shore;
While I stand on the roadway, or on the pavements grey,
I hear it in the deep heart's core.