I made a two-part video series for Chapter 15 (
part 1,
part 2). Please watch these for Tuesday, March 27. We may have a mini-quiz.
Notes:
For ALL diatonic seventh chords
- Have the same function as
corresponding triads
- Chordal 7th
must resolve down by step—STRICT
- Chordal 7th
must be prepared
- Common tone—looks like
suspensions
- Stepwise motion—looks
like PT or NN
- Jump up—looks like
appoggiatura
- Write seventh chords
complete, ESPECIALLY in inversion (=no doubling)
Leading-tone seventh chord
- Ti-re-fa-la (in major) – ø7
- Ti-re-fa-le (in minor or
major) – º7
- Stepwise motion
- Tonic prolongation
- Voice leading
- Ti -->
do
- Fa -->
mi (me)
- La (le) -->
SOL
- Re -->
Do or mi (me)*
Supertonic seventh chord
- Predominant
- “Do” is chordal seventh
- Combines ii and IV (iiº
and iv in minor)
- Quite commonly used
Subdominant seventh chord
- Predominant
- (Major key) Fa-la-do-Mi … IV7 (chord quality MM7)
- (Minor key) Fa-le-do-me … iv7 (chord quality mm7)
- Scale degree ^3 (mi/me) is
chordal seventh
- An alternate harmonization
of ^3-^2-^1