Here's a breakdown:
* Ballad meter: The poem is written in iambic tetrameter (four metrical feet per line, with an unstressed syllable followed by a stressed syllable). This creates a rhythmic, sing-song quality that is characteristic of ballads.
* ABCB rhyme scheme: The rhyme scheme is consistent throughout the poem. This structure adds to the poem's musicality and helps the reader remember the story.
While the poem has a traditional structure, it's important to note that it uses simple language and everyday speech, which contributes to its enduring popularity and makes it accessible to a wide audience.