Structure versus Function
Posted: Fri Mar 23, 2018 1:42 am
I had a student today who is taking a Theory class in his High School, and was asking about ‘consonance’ versus ‘dissonance’ in a chord progression. Our discussion was based on what I view to be the most important distinctions between Vertical Gravity and Horizontal Gravity (at least in relation to chord progressions, I‘ll have to make another post about melody).
Essentially we talked about framing consonance and dissonance first by STRUCTURE, and then by FUNCTION.
For me, the whole basis of the organization for Vertical Gravity is based on ‘Structural Consonance’ versus ‘Structural Dissonance’, which is really just the relationships between the individual notes of the chord, and whether they are consonant harmonic intervals or dissonant harmonic intervals. I think the whole point of learning the ‘Western Order of Tonal Gravity’ is to organize this idea: What types of CHORD BUILDING INTERVALS are available in each Tonal Order, and how many various forms of progressively ‘outgoing’ harmonic tensions can we use to build a ‘stack of notes’.
On the other hand, when it comes to Horizontal Gravity, the focus is on the relationships between each individual chord movement within a progression, and how ‘Close’ or ‘Distant’ each chord is from one to the next as far as the Lydian Tonic relationship. My student and I then spent some time exploring this one basic idea:
Within each form of Gravity, there is room for all types of contrasting variation, from ‘Very Consonant’ to ‘Very Dissonant’, and everything in between, and these two ‘forces’ can behave totally independent from each other:
Structurally Consonant (versus) Mildly Dissonant Structurally (versus) Noticeably Dissonant Structurally
Functionally Consonant (versus) Mildly Dissonant Functionally (versus) Noticeably Dissonant Functionally
For his assignment this week, I asked him ‘What would a progression sound like that uses voicings which are structurally consonant, but are noticeably dissonant functionally?’, followed by ‘Then what would a progression sound like that uses voicings which are structurally dissonant, but are very consonant functionally?’
Now we just have to talk about Rhythm lol
Essentially we talked about framing consonance and dissonance first by STRUCTURE, and then by FUNCTION.
For me, the whole basis of the organization for Vertical Gravity is based on ‘Structural Consonance’ versus ‘Structural Dissonance’, which is really just the relationships between the individual notes of the chord, and whether they are consonant harmonic intervals or dissonant harmonic intervals. I think the whole point of learning the ‘Western Order of Tonal Gravity’ is to organize this idea: What types of CHORD BUILDING INTERVALS are available in each Tonal Order, and how many various forms of progressively ‘outgoing’ harmonic tensions can we use to build a ‘stack of notes’.
On the other hand, when it comes to Horizontal Gravity, the focus is on the relationships between each individual chord movement within a progression, and how ‘Close’ or ‘Distant’ each chord is from one to the next as far as the Lydian Tonic relationship. My student and I then spent some time exploring this one basic idea:
Within each form of Gravity, there is room for all types of contrasting variation, from ‘Very Consonant’ to ‘Very Dissonant’, and everything in between, and these two ‘forces’ can behave totally independent from each other:
Structurally Consonant (versus) Mildly Dissonant Structurally (versus) Noticeably Dissonant Structurally
Functionally Consonant (versus) Mildly Dissonant Functionally (versus) Noticeably Dissonant Functionally
For his assignment this week, I asked him ‘What would a progression sound like that uses voicings which are structurally consonant, but are noticeably dissonant functionally?’, followed by ‘Then what would a progression sound like that uses voicings which are structurally dissonant, but are very consonant functionally?’
Now we just have to talk about Rhythm lol