Sonata
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In music, a sonata is a piece that consists of 3 or 4 movements that can be for different musical instruments. The term evolved through the history of music, designating a variety of forms until the C
Ludwig van Beethoven's manuscript sketch for Piano Sonata No. 28, Movement IV Geschwind, doch nicht zu sehr und mit Entschlossenheit (Allegro), in his own handwriting. The piece was completed in 1816.
Individual sheet music of a sonata, written in the Baroque period.
Fugue
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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
Sonata
…19th century it came to represent a principle of composing large-scale works. It was applied to most instrumental genres and regarded—alongside the fugue—as one of two fundamental methods of organizing, interpreting and analyzing concert music. Though the musical style of sonatas has changed since the…
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)