Analysis of A Song of Enchantment

A song of Enchantment I sang me there,
In a green-green wood, by waters fair,
Just as the words came up to me
I sang it under the wild wood tree.

Widdershins turned I, singing it low,
Watching the wild birds come and go;
No cloud in the deep dark blue to be seen
Under the thick-thatched branches green.

Twilight came: silence came:
The planet of Evening's silver flame;
By darkening paths I wandered through
Thickets trembling with drops of dew.

But the music is lost and the words are gone
Of the song I sang as I sat alone,
Ages and ages have fallen on me -
On the wood and the pool and the elder tree.