Suggested Learning Resources
3) Online Reading: Diatonic Sequence http://personal.stevens.edu/~abrick/theory2/theory2_notes_07.html
- A Descending Third Harmonic sequence is a series of chords, where the
root note of those chords are each a descending 3rd apart.
- An example using roman numerals is I, vi, IV, ii, vii, V, iii, I This
is a Literal Descending 3rd Harmonic Sequence (READ NEXT BULLETPOINT !)
- IMPORTANT: Because of the issue of parallel 5ths and 8ves that occur when
going directly from one chord to the next of those listed above, what is known as
the Traditional Descending 3rd Harmonic Sequence has chords in-between the chords
of the pattern listed above.
- The most common Traditional Descending 3rd harmonic sequence is the following,
I – V – vi – iii – IV….
- Unlike the descending 5th sequence, the entire Roman numeral pattern does
not usually appear in real music (does not create a circle progression)
https://youtu.be/PX7Av14vcwc?t=2m14s
Objective 26.2: Define, identify, and label Descending 3rd Harmonic Sequence (with
LIP)