Courtesy of Dr. Jo Koster
The sonnet as a form developed in Italy probably in the thirteenth century. Petrarch, in the fourteenth century, raised the sonnet to its greatest Italian perfection and so gave it, for English readers, his own name.
The form was introduced into England by Thomas Wyatt, who translated Petrarchan sonnets and left over thirty examples of his own in English. Surrey, an associate, shares with Wyatt the credit for introducing the form to England and is important as an early modifier of the Italian form. Gradually the Italian sonnet pattern was changed and since Shakespeare attained fame for the greatest poems of this modified type his name has often been given to the English form.
Certain qualities common to the sonnet as a form should be noted. Its definite restrictions make it a challenge to the artistry of the poet and call for all the technical skill at the poet's command. The more or less set rhyme patterns occurring regularly within the short space of fourteen lines afford a pleasant effect on the ear of the reader, and can Create truly musical effects. The rigidity of the form precludes a too great economy or too great prodigality of words. Emphasis is placed on exactness and perfection of expression. You can see how this form would attract writers of great technical skill who are fascinated with intellectual puzzles and intrigued by the complexity of human emotions, which become especially tangled when it comes to dealing with the sonnet's traditional subjects, love and faith.
Original Italian sonnet form in which the sonnet's rhyme scheme divides the poem's 14 lines into two parts, an octet (first eight lines) and a sestet (last six lines). The rhyme scheme for the octet is typically abbaabba. There are a few possibilities for the sestet, including cdecde, cdcdcd, and cdcdee. Whichever form the sestet takes, there are only 5 rhymes in the sonnet. This form was used in the earliest English sonnets by Wyatt and others. Ideally, the sense of the lines falls into groups different from the rhyme groups; thus, nowhere do you encounter a pat couplet. The Italian form usually projects and develops a subject in the octave, then executes a turn at the beginning of the sestet, which means that the sestet must in some way release the tension built up in the octave.
Also English sonnet or Shakespearean sonnet. Form in which the rhyme scheme is abab,cdcd,efef,gg. This adaptation of the Italian model allowed for the sparser rhymes of the English language by using seven rather than five rhymes and also encouraged a "summing up" couplet at the end. This change probably contributed to the development of the sonnet as a dramatic form. The Shakespearean sonnet has a wider range of possibilities. One pattern introduces an idea in the first quatrain, complicates it in the second, complicates it still further in the third, and resolves the whole thing in the final epigrammatic couplet.