COLLAGE is a term borrowed from art. A kind of surrealist art. Cutting and pasting of flat objects together in an incongruous manner for their symbolic or suggestive effect for a picture so made. In music it takes the form of using elements of different keys, via chords, that have a principle that forms a sort of glue to hold the composition together.
The unifying element sometimes is a diminished, augmented, major, or minor principal of chords of the same type or types. The progressions use roots of chord types with the chords being of a different type. Example: Diminished principal roots use minor third intervals and with this progressional pattern all major chords might be used for those roots.
C dim 7 = chord tones become roots of major chords. C, Eb, F#, A or alternating C Ebm F# Am or Cm Ebm F#m Am.
The material presented in this lesson is a different form of dissonance utlizing the removal at times of a key or tonal center. Abstraction. Through repetition the ear gets used to hearing the combinations used. Then the harmonies played start to become tame. No amplification is being used.. When using any form of dissonance, don't run it too long or the ear gets tired of hearing the unusual, whether shifting the feeling of key or stressing electronic devices.
If there is some confusion on the terms DS and CODA read page 7 for simplification
C 1985
