In classical music, a fugue is a contrapuntal, polyphonic compositional technique in two or more voices, built on a subject that is introduced at the beginning in imitation, which recurs frequently th
The six-part fugue in the "Ricercar a 6" from The Musical Offering, in the hand of Johann Sebastian Bach
The interval of a fifth inverts to a fourth (dissonant) and therefore cannot be employed in invertible counterpoint, without preparation and resolution.
Visual analysis of J.S. Bach's Fugue No. 2 in C minor, BWV 847, from the Well-Tempered Clavier, Book 1 (bars 7–12)
The Art of Fugue, or The Art of the Fugue, BWV 1080, is an incomplete musical work of unspecified instrumentation by Johann Sebastian Bach. Written in the last decade of his life, The Art of Fugue is
Fugue
…and the inverted subject continues to feature prominently throughout the fugue. Examples include Contrapunctus V through Contrapunctus VII, from Bach's The Art of Fugue. During the Baroque period, counter-fugues were sometimes called by the Latin name fuga contraria. German composer Johann Mattheson coined the term…
Title page of the first edition, 1751
The final page of the Fuga a 3 Soggetti fragment, with a handwritten note by Carl Philipp Emanuel Bach that the composer died at this point.