Rhyme and rhythm. In the poem, the author employed these two poetic devices to emphasize the musicality of the poem. The rhyme scheme is alternate (abab cdcd efef). The rhyme isn't perfect, but the intention to rhyme is clear. Like the rhyme scheme, the rhythm is also evident although, again, not perfect. Each line has 8 syllables, few have 7. This uniform number of syllables create a steady beat when the lines are read.