Answer:
The poem's use of the saspistacated internal rhymes gives the piece a tone of madness in a deep soft way, in a way of resembling music "Once upon a midnight dreary, while I ponered weak and weary"(Line 1). The use of internal rhyme creates the tone of the poem keeping the poem in touch with the speaker's feelings. When the speaker feels dramatic, scared, musical, calm, the reader felt it in the poem using the internal rhymes and other factors. The interal rhymes keeps that poem's tone smooth and everalsting.
