Analysis of Echo Song

Who can say where Echo dwells?
In some mountain-cave, methinks,
Where the white owl sits and blinks;
Or in deep sequestered dells,
Where foxglove hangs its bells,
Echo dwells.
Echo!
Echo!

Phantom of the crystal Air,
Daughter of sweet Mystery!
Here is one has need of thee;
Lead him to thy secret lair,
Myrtle brings he for thy hair--
Hear his prayer,
Echo!
Echo!

Echo lift thy drowsy head,
And repeat each charmëd word
Thou must needs have overheard
Yestere'en ere, rosy-red,
Daphne down the valley fled--
Words unsaid,
Echo!
Echo!

Breathe the vows she since denies!
She hath broken every vow;
What she would she would not now--
Thou didst hear her perjuries.
Whisper, whilst I shut my eyes,
Those sweet lies,
Echo!
Echo!