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Cadences are divided into four main types, according to their harmonic progression: authentic (typically perfect authentic or imperfect authentic), half, plagal, and deceptive. Typically, phrases end on authentic or half cadences, and the terms plagal and deceptive refer to motion that avoids or follows a phrase-ending cadence.
Otherwise explained: if the melody moves mostly above the final, with an occasional cadence to the sub-final, the mode is authentic. Plagal modes shift range and also explore the fourth below the final as well as the fifth above. In both cases, the strict ambitus of the mode is one octave. A melody that remains confined to the mode's ambitus is ...
A phrase is a substantial musical thought, which ends with a musical punctuation called a cadence. Phrases are created in music through an interaction of melody, harmony, and rhythm. [3] Giuseppe Cambini—a composer, violinist, and music teacher of the Classical period—had this to say about bowed string instruments, specifically violin ...
More recent definitions, especially by American theorists, have tightened the use of the term to restrict the contrast so that the first phrase must end in a half cadence or imperfect authentic cadence and the second a perfect authentic cadence. [10] [11]
Perfect authentic cadence (IV–V–I chord progression, in which we see the chords F major, G major, and then C major, in four-part harmony) in C major. "Tonal music is built around these tonic and dominant arrival points [cadences], and they form one of the fundamental building blocks of musical structure".
This particular cadence, V–I, is known as an authentic cadence. However, since a I–V–I progression is repetitive and skips most of the circle of fifths, it is common practice to precede the dominant chord with a suitable predominant chord, such as a IV chord or a ii chord (in major ), in order to maintain interest.
In classical music theory, the English cadence is a contrapuntal pattern particular to the authentic or perfect cadence. It features a flattened seventh scale degree against the dominant chord , [ 1 ] which in the key of C would be B ♭ and G–B ♮ –D.
The theme is in rounded, continuous binary form and is made up of two phrases, with the exposition beginning with the first musical phrase ending on a half cadence and the following phrase ending with a perfect authentic cadence resulting in a parallel period. The music is set in simple meter, with a 4/4 time signature throughout. Moving eighth ...