The most striking of the many poetic devices in “Kubla Khan” are its sounds and images. One of the most musical of poems, it is full of assonance and alliteration, as can be seen in the opening five lines:
In Xanadu did Kubla KhanA stately pleasure-dome decree:Where Alph, the sacred river, ranThrough caverns measureless to man Down to a sunless sea.
This repetition of a, e, and u sounds continues throughout the poem with the a sounds dominating, creating a vivid yet mournful song appropriate for one intended to inspire its listeners to cry “Beware! Beware!” in their awe of the poet. The halting assonance in the line “As if this earth in fast thick pants were breathing” creates the effect of breathing.
The alliteration is especially prevalent in the opening lines, as each line closes with it: “Kubla Khan,” “pleasure-dome decree,” “river, ran,” “measureless to man,” and “sunless sea.” The effect is almost to hypnotize the reader or listener into being receptive to the marvelous visions about to appear. Other notable uses of alliteration include the juxtaposition of “waning” and “woman wailing” to create a wailing sound. “Five miles meandering with a mazy motion” sounds like the movement it describes. The repetition of the initial h and d sounds in the closing lines creates an image of the narrator as haunted and doomed:
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.
The assonance and alliteration soften the impact of the terminal rhyme and establish a sensation of movement to reinforce the image of the flowing river with the shadow of the pleasure dome floating upon it.
The imagery of “Kubla Khan” is evocative without being so specific that it negates the magical, dreamlike effect for which Coleridge is striving. The “gardens bright with sinuous rills,” “incense-bearing tree,” “forests ancient as the hills,” and “sunny spots of greenery” are deliberately vague, as if recalled from a dream. Such images stimulate a vision of Xanadu bound only by the reader’s imagination.