From the very beginning Samuel Taylor Coleridge was obsessed with the sounds of words.
"From my earliest years I have had a feeling of Dislike and Disgust connected with my own Christian Names: such a vile short plumpness, such a dull abortive smartness in the first Syllable, and this so harshly contrasted by the obscurity and indefiniteness of the syllable Vowel, and the feebleness of the uncovered liquid, with which it ends--the wabble it makes, and staggering betweeen a di--and a tri-syllable--and the whole name sounding as if you were abeeceeing S.M.U.L.--altogether it is perhaps the worst combination, of which vowels and consonants are susceptible."
Quoted from http://etext.virginia.edu/stc/Coleridge/descriptions/His_name.html
While he developed many other criterion for judging his own poetry or the work of others (he was one of the great literary critics and theorists of his time) it was still sounds more than anything else that ruled his heart. Were it not for the sounds, his unfinished poem KUBLA KHAN would be merely an unfinished work, and would be unlikely to get published, let alone remembered. But the sounds, the sounds are incredible, glorious, perfect. The sense of it all is insignificant; it is unfinished anyway, but even were it finished the sense would play a secondary part in the glory of the poem. The sound is all.
In Xanadu did Kubla Khan
A stately pleasure-dome decree:
Where Alph, the sacred river, ran
Through caverns measureless to man
Down to a sunless sea.
So twice five miles of fertile ground
With walls and towers were girdled round:
And there were gardens bright with sinuous rills,
Where blossomed many an incense-bearing tree;
And here were forests ancient as the hills,
Enfolding sunny spots of greenery.
But oh ! that deep romantic chasm which slanted
Down the green hill athwart a cedarn cover !
A savage place ! as holy and enchanted
As e'er beneath a waning moon was haunted
By woman wailing for her demon-lover !
And from this chasm, with ceaseless turmoil seething,
As if this earth in fast thick pants were breathing,
A mighty fountain momently was forced:
Amid whose swift half-intermitted burst
Huge fragments vaulted like rebounding hail,
Or chaffy grain beneath the thresher's flail:
And 'mid these dancing rocks at once and ever
It flung up momently the sacred river.
Five miles meandering with a mazy motion
Through wood and dale the sacred river ran,
Then reached the caverns measureless to man,
And sank in tumult to a lifeless ocean:
And 'mid this tumult Kubla heard from far
Ancestral voices prophesying war !
The shadow of the dome of pleasure
Floated midway on the waves;
Where was heard the mingled measure
From the fountain and the caves.
It was a miracle of rare device,
A sunny pleasure-dome with caves of ice !
A damsel with a dulcimer
In a vision once I saw:
It was an Abyssinian maid,
And on her dulcimer she played,
Singing of Mount Abora.
Could I revive within me
Her symphony and song,
To such a deep delight 'twould win me,
That with music loud and long,
I would build that dome in air,
That sunny dome ! those caves of ice !
And all who heard should see them there,
And all should cry, Beware ! Beware !
His flashing eyes, his floating hair !
Weave a circle round him thrice,
And close your eyes with holy dread,
For he on honey-dew hath fed,
And drunk the milk of Paradise.