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Capitalization and punctuation are scarce especially in the first half of the poem. Few of the first words in each line are capitalized. Commas are rare at the end of each line and some sentences end in the middle of a line rather than at the end. Colons are used to keep a constant flow instead of using periods to end a sentence. This allows the poem to flow right through. The sentence structure of the poem is different from the traditional structure. Lines one through nine make up one sentence and thirteen through eighteen make up another. They are fairly long sentences with the first one including two colons. Toward the end of poem shorter sentences are incorporated. The long sentences and choice of punctuation draw the reader into the poem a lot quicker than short sentences would. This structure is one of the techniques that Atwood uses to capture the reader. There is no constant meter in "Siren Song," and it flows more like a story in paragraph form rather than like a poem. Enjambment occurs in the majority of the lines. Lines that are end-stopped are nine, eight-teen, twenty, and twenty-seven. Also, no rhyme scheme is used which furthers the poem to be read through in a paragraph manner. The way the poem is read through with no rhythm or beat, added to minimal punctuation at the end of the lines creates fast, easy reading, and enhances Atwood's purpose to draw the reader in the poem. .
The title of the poem, "Siren Song" is luring because of the alliteration. As a reader, you want to explore the poem and see what the song actually is. Repetition of words is utilized extensively throughout "Siren Song." "The song" is stated in the first three stanzas in numerous lines to create an aura about it and to separate it as being a very important song. Atwood writes, "This is the one song everyone would like to learn" (1-2) making the impression that it is the principle song to know.