Hi there during the video you gave examples to demonstrate the usage of the chart. You played a I-IV-I series of chords despite there being no connecting line. I understand that this progression albeit not as common as others is used fairly frequently. Would this be mainly down to the fact that the IV is so weighted by it’s sub (pre) dominant qualities?
Best wishes great site by the way1
I-IV-I works because of voice leading, and is not necessarily functional. For instance in C major, the C is common between the two chords, E moves up to F by half-step, and G moves up to A by whole step. This all adds up to very smooth voice leading.
This principle is also why other more exotic progressions work. Good voice leading and common tones makes nice sounding progressions.
For instance, the progression C to Eb sounds good, even though it is not diatonic. C and Eb share the common tone of G, E moves by half-step to Eb, and C moves by whole step to Bb.
The same could be said for C to E, C to A, C to Ab. These are all known as chromatic mediant relationships.
Glad to hear you are enjoying the course.
Cool!! I thought as much. Thank you. I have to say that your on-line academy is the BIZ! I am a fumbling classical guitar player of over 35 years of service to the instrument that has yearned to write my own simple but effective music for those mysterious six strings. I am simply bristling with ideas after spending a day or two looking at your most generous”free intro” guide I will most certainly be enrolling for (101) I have a fairly good knowledge of harmony neopolitan sixths feminine cadences etc etc but no guidance of how to approach form and coherent structure in music. A most thank you!! Chris