Cadence Rules

An interrupted cadence or a deceptive cadence ends with an unexpected chord – the music literally sounds as if it had been “interrupted”. An imperfect cadence or semi-cadence ends with the V chord. It can start with Agreement I, II or IV. The most common chord progression you will encounter is from agreement V to agreement VI (V-VI). In this example of an interrupted cadence in C major, the last 2 chords are V (G) and VI (the minor). Listen to how frustrating it is that the music does not continue: in Bach`s harmonization of the choir “Wachet auf”, a sentence is repeated that ends with a deceptive cadence, changing the cadence into an authentic one: a pause in a voice can also be used as a weak inner cadence. [31] The following example, Qui vult venire post me de Lassus, mm. 3–5, shows a pause in the third measure. A plagalcade is a cadence from IV to I. It is also known as the Amen cadence because of its frequent placement of the text “Amen” in hymns. A landini cadence (also known as the sixth Landini cadence, sixth Landini cadence or lower third cadence[37]) is a cadence that was widely used in the 14th and early 15th centuries. It is named after Francesco Landini, a composer who used them extensively.

Similar to a clausula vera, it contains an escape tone in the upper voice, which briefly limits the interval to a perfect fifth before the octave. The plagalcade can be interpreted as I-V if the IV-I cadence is perceived as a modulation, in which the IV chord becomes the I chord of the new tonic and the I chord of the previous tone is now a dominant chord in the modulated tone. [11] (Cf. §Half cadence above and secondary dominant.) This is when the song (or part of a song) is based on a dominant chord, that is, the dominant dissolves on nothing and leaves the cadence “empty”. Examples: In classical music, composers often drew the authentic cadences at the end of the sections; The dominant cadence chord can take one or two measures, especially if it contained the resolution of a suspension left by the tendon in front of the dominant. During these two measures, the solo instrument (in a concert) often played a trill on the superton (the fifth of the dominant chord); Although supertonic and subtonic trills were common in the Baroque period, they usually lasted only half a measure. One of the most famous endings of all music is found in the last bars of Wagner`s opera Tristan und Isolde, where the dissonant chord of the opera`s opening sentence is finally resolved “three powerful acts and five hours later”[38] in the form of a minor-plagal cadence: the descending cadence diminished by a seven-half-step chord is supported by two common tones. [44] Burgundian cadences became popular in Burgundian music.

Note the parallel quarters between the upper voices. [15] One of the most striking uses of this cadence is found in the section in A minor at the end of the presentation in the first movement of Brahms` Third Symphony. The music develops into an implicit dominant in E minor (B7) with a rapid chromatic scale upwards, but suddenly switches to C major. The same device is used again in the summary; this time, the alternative stage is – as expected – in F major, the tonic of the entire symphony. [Citation needed] Listen to this example of an imperfect cadence in C major. Note that the last 2 chords are I (C) followed by V (G). Instead, Bach inserts a deceptive cadence (V-VI in F minor) on the 60 bar, resulting in a long digression of a few dozen bars before reaching a resolution on the final cadence (V-I). At the beginning of the last movement of Gustav Mahler`s 9th Symphony, the listener hears a series of many deceptive cadences that progress from V to IV6. [Citation needed] Half-step cadences are common, if not clichéd, in jazz. [43] For example, the upward cadence of a decreased seven chord half-step, which– using a secondary diminished seven chord, generates momentum between two chords one major second apart (with the septime decreased in between). [44] The cadences of the Middle Ages and the Renaissance are based on dyads rather than chords. The first theoretical mention of cadences comes from Guido von Arezzo`s description of the occurrence in his micrologue, where he uses the term to mean where the two lines of a two-part polyphonic sentence end in harmony.