Free Verse poetry lacks consistent rhyme schemes, metrical patterns and musical forms. They still have some structure, but they give myself and many other poets some leeway. Especially if you were to compare it to more strict forms of poetry like blank verse. Though not bound by rhyme and meter rules, free verse can be intersperse with lines that are more formally structured.
This type of poetry is able to have rhyme schemes if the author chooses to. However, they're not obligated to have any rhythm or rhyme schemes or follows those rules. Free verse allows poets to be able to shape the poem however they see fit. We are still able to use various tools such as cadences and alliteration if we feel it would be suitable for the piece we're creating. Compared to the constraints normal poetry possesses, this type of poetry is based on normal pauses and natural rhythmical phrases.
Free verse has become quite common in contemporary poetry. For some poets, free verse is seen as a technique used to give us some freedom from rhyme and rhythm. Especially since it allows us to attempt to change the readers' mind in an odd way.
Some great examples of free verse poetry are The Garden (By Ezra Pound) and Come Slowly, Eden (By Emily Dickinson).
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