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Inversion is just a rotation of the root.
Closed form uses the most parsimonious setting so for c major , if the first inversion doesn't have the root as the soprano line, it would be open.
Third inversion is used for 4 note chords ie dominant v , diminished 7, half diminished 7 ....
To correct cryogenic or elaborate on his purposefully simplistic explanation which is adequate but wrong . Inversion only accounts for the bass tone. It does not dictate the order. In fact closed and open chords usually both dictate the order and the spread as they are usually intertwined.
Honestly these are pointless terms for dance music.
If anything, the concept was tought for pianists who accompany other musicians. Or a way to describe pieces in doctoral thesis'. It has very little practical value at least I'm anything that inst common era classical.
I thought Farris response enough to explain what is going on. The change in timbre is not a matter of open or closed but just the use of consecutive chords with inversions to give movement.
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Last edited by Looney4Clooney on Apr-01-2014 at 20:37
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