TonalityGUIDE - basic tonal music theory and analysis for undergraduates
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Longer Progressions

introduction diatonic chromatic

introduction | fifths | seconds | thirds

short progs.
longer progs.

One of the most important larger-scale harmonic relationships of a third - that between relative major and minor - is discussed in the key and modulation section of TonalityGUIDE. During the course of the nineteenth century, third relationships became an increasingly independent part of the harmonic language.

In the common practice period, modulations by third to keys other than the relative major or minor tend to be a brief 'stop-over' on the way to a key a fifth away. In other words, if there is a modulation from I to iii, for example, the music tends to continue on to V. These sort of larger-scale patterns are beyond the scope of TonalityGUIDE, but the analytical methods introduced on its sister site - - offer a more sophisticated way of discussing the wider structure of tonal music.

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© Copyright Thomas Pankhurst

TonalityGUIDE - Tonal Harmony and Voiceleading - Table of Contents