Lecture on Triad Inversions

Introduction to Triad Inversions

• Basic concept: Inversions give chords different sounds by rearranging the notes.
• Example: C Major triad consists of C, E, G.

Types of Inversions

Root Position

• Basic form of the triad.
• Example: C Major (C, E, G).

First Inversion

• Move the root note up an octave.
• Lowest note is the third of the chord.
• Example: C Major (E is the bass).

Second Inversion

• Move the third up an octave.
• Lowest note is the fifth of the chord.
• Example: C Major (G is the bass).

Inversions for Minor Chords

• Same concept applies.
• Example: C Minor in different inversions.

Inversions with Extended Chords

• Seventh, Ninth, Eleventh, and Thirteenth Chords: More notes mean more possible inversions.
• Example: C Minor 7 in different inversions.

Fourth Inversion

• Requires a ninth chord.
• Creation of fourth inversion with C Minor 9.
• Beyond third inversion, chords can be heard as different chords.

Determining Inversions

• Key Factor: The bass note determines the inversion.
• Example: C Major in various positions based on bass note.

Practical Application of Inversions

Creating Different Sounds

• Use inversions to create complex sounds and movement.
• Example: Using C Minor and B Flat Major.

Importance for Piano Players and Composers

• Avoiding Disrupted Movement: Root position causes excessive movement.
• Smooth Transitions: Inversions allow for smooth voice leading.

Voice Leading

• Definition: Movement of individual notes within chords.
• Smooth Transitions: Achieved through stepwise motion.

Example Progressions

Simple Progression

• A Minor, G Major, C Major with inversions.
• Use G Major in first inversion for smooth transition.

Longer Progression

• Progression: F Major, E Minor, A Minor, G Major, C Major.
• Use inversions for smoother transitions between chords.
• Example adjustments: E Minor in first inversion, G Major in first inversion.

Conclusion

• Overall Benefit: Inversions reduce unnecessary movement and provide a more pleasing auditory experience.
• Visual and Auditory Effect: Inversions reduce jumps in music, making it easier to play and more enjoyable to listen to.