Poetry and Rhymes

Which of these is shared by the words in poetry and the notes in music?

More Questions from Poetry and Rhymes
In "Sing a Song of Sixpence", how many blackbirds were baked in a pie?
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In the nursery rhyme "Hey Diddle Diddle", who had a fiddle?
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In "Hush, Little Baby", what will the mother buy the baby if the diamond ring turns to brass?
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Who wrote the poem "Silent, Silent Night"?
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Which poet wrote the poem "Being Your Slave"?
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What did the Knave of Hearts steal in the nursery rhyme "The Queen of Hearts"?
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The title character in "The Fir-Tree" is annoyed when what animal hops over him?
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Whose poem is titled "The Ballad of the Burglar of Babylon"?
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