Computer Music

PRO TIPS

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CIRCLE PROGRESSIO­NS

In my final example, the progressio­n I’ve used is described as a circle progressio­n. The name comes from the fact that the roots of the chords that make up the progressio­n follow the order of the circle of fifths. In other words, the root notes of the chords proceed in intervals of a fifth. Famous examples of this include Pachelbel’s Canon and Altogether­Now by The Farm.

DOMINANT FUNCTION

Moving a progressio­n forward, each chord in a diatonic set can take on a purpose, known as ‘harmonic function’. So, if a chord has a dominant function, we expect an immediate resolution to the tonic chord. This is handy when composing progressio­ns, as by delaying that resolution by following a dominant chord with something other than the tonic, you create an air of instabilit­y. In minor keys, the V and VII chords both have dominant function.

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