|| I |- !2 | A major || dominant || V |- !3 | B minor || submediant || vi |- !4 | F minor || mediant|| iii |- !5 | G major || subdominant || IV |- !6 | D major || tonic || I |- !7 | G major || subdominant || IV |- !8 | A major || dominant || V |} The eight chords of this progression follow a sequential pattern known as the Romanesca. This progression has been identified as a common seventeenth- and eighteenth-century schema by Robert Gjerdingen. In Germany, Italy and France of the 17th century, some pieces built on an ostinato bass were called chaconnes or passacaglias; such works sometimes incorporate some form of variation in the upper voices. While some writers consider each of the 28 statements of the ground bass a separate variation, one scholar finds that Pachelbel's canon is constructed of just 12 variations, mostly four bars in length, and describes them as follows: (bars 3–6) quarter notes (bars 7–10) eighth notes (bars 11–14) sixteenth notes (bars 15–18) leaping quarter notes, rest (bars 19–22) thirty-second-note pattern on scalar melody (bars 23–26) staccato, eighth notes and rests (bars 27–30) sixteenth-note extensions of melody with upper neighbor notes (bars 31–38) repetitive sixteenth-note patterns (bars 39–42) dotted rhythms (bars 43–46) dotted rhythms and sixteenth-note patterns on upper neighbor notes (bars 47–50) syncopated quarter- and eighth-note rhythm (bars 51–56) eighth-note octave leaps Pachelbel's canon thus merges a strict polyphonic form (the canon) and a variation form (the chaconne). Pachelbel skillfully constructs the variations to make them "both pleasing and subtly undetectable." Gigue The gigue is set in time and consists of 2 equal sections of 10 bars each. Unlike the canon, the gigue neither has a repeating bass voice nor a set chord progression. The gigue exhibits fugal writing, with each section introducing a brief melodic statement which is then imitated in the other voices. Parodies In its August 17, 1981, issue the magazine The New Yorker published a cartoon by Mick Stevens captioned "Prisoner of Pachelbel," in which a prisoner hears over the loudspeaker: "For your listening pleasure, we once again present Pachelbel's Canon." The 1991 musical parody album WTWP Classical Talkity-Talk Radio by P. D. Q. Bach is set at a fictional radio station whose call letters stand for "Wall-To-Wall Pachelbel". In 2017, BBC Radio 4 sketch show John Finnemore's Souvenir