villanelle
A villanelle is a structured form of poetry consisting of 19 lines. It features five tercets (three-line stanzas) followed by a quatrain (four-line stanza). The rhyme scheme is ABA for the tercets and ABAA for the quatrain, creating a musical quality.
The form is known for its use of repetition, with the first and third lines of the opening tercet alternating as the final lines of the subsequent stanzas. A famous example of a villanelle is Dylan Thomas's "Do Not Go Gentle into That Good Night," which showcases the emotional depth and rhythmic nature of this poetic form.