This turn marks a shift in the direction of the foregoing argument or narrative, turning the sestet into the vehicle for the counterargument, clarification, or whatever answer the octave demands. Since the Petrarchan presents an argument, observation, question, or some other answerable charge in the octave, a turn, or volta, occurs between the eighth and ninth lines.
The tightly woven rhyme scheme, abba, abba, cdecde, or cdcdcd, is suited for the rhyme-rich Italian language, though there are many fine examples in English. Named after one of its greatest practitioners, the Italian poet Petrarch, the Petrarchan sonnet is divided into two stanzas, the octave (the first eight lines) followed by the answering sestet (the final six lines). The first and most common sonnet is the Petrarchan, or Italian. Two sonnet forms provide the models from which all other sonnets are formed: the Petrarchan and the Shakespearean. The name is taken from the Italian sonetto, which means “a little sound or song.” Traditionally, the sonnet is a fourteen-line poem written in iambic pentameter, employing one of several rhyme schemes, and adhering to a tightly structured thematic organization.
The sonnet is a popular classical form that has compelled poets for centuries.
