What might cause someone to describe a line of poetry as musical?

* Repetition: The repetition of sounds, words, or phrases can create a musical effect in poetry. For example, the poet Emily Dickinson often uses repetition to create a sense of rhythm and musicality in her poems.

* Alliteration: Alliteration is the repetition of consonant sounds at the beginning of words. This can create a pleasing sound effect that can make a line of poetry sound musical. For example, the poet Samuel Taylor Coleridge uses alliteration to create a musical effect in his poem "The Rime of the Ancient Mariner."

* Assonance: Assonance is the repetition of vowel sounds within words. This can create a smooth, flowing sound that can make a line of poetry sound musical. For example, the poet Alfred, Lord Tennyson uses assonance to create a musical effect in his poem "The Lady of Shalott."

* Consonance: Consonance is the repetition of consonant sounds at the end of words. This can create a strong, percussive sound that can make a line of poetry sound musical. For example, the poet Gerard Manley Hopkins uses consonance to create a musical effect in his poem "The Windhover."

* Onomatopoeia: Onomatopoeia is the use of words that imitate the sounds they describe. This can create a vivid, sensory experience that can make a line of poetry sound musical. For example, the poet James Agee uses onomatopoeia to create a musical effect in his poem "Permit Me Voyage, Love."