The Difference Between a German 6th and a Dominant 7th - Music Theory
TLDRIn this video, Gareth Green explains the key difference between a dominant seventh chord and a German sixth chord, which often confuse people as they sound identical. He outlines how to build each chord, analyzes their function and voice leading resolutions in context, and stresses why the enharmonic difference matters - though they sound the same, dominant sevenths resolve to the tonic while German sixths resolve to the dominant, so their role and direction differs hugely. Ultimately, the context and voice leading betray their distinct identities and purposes, even when played as standalone chords they initially seem indistinguishable.
Takeaways
- ๐ The video explains the difference between a dominant seventh chord and a German sixth chord, which can sound identical but function differently.
- ๐ฏ The difference lies in whether the chord contains an Fโฏ (German sixth) or Gโญ (dominant seventh).
- ๐ค Dominant sevenths typically resolve to the tonic or submediant chord, following voice leading conventions.
- ๐ฒ German sixths usually resolve to the dominant chord or tonic chord in second inversion before resolving to dominant.
- ๐ง The different functioning notes (Fโฏ vs Gโญ) imply different harmonic contexts and resolutions.
- ๐ Even though the chords may sound the same, their function and context are very different.
- ๐น The video demonstrates how a dominant seventh resolves within Dโญ major, while a German sixth resolves within C major.
- ๐ฎ Enharmonic notes like Fโฏ and Gโญ sound identical but allow different harmonic opportunities.
- ๐ก Understanding the distinction allows composers to modulate and transition between keys.
- ๐ The video recommends further music theory resources on the website for learning more about chord progressions.
Q & A
What is the difference between a dominant seventh chord and a German sixth chord?
-The dominant seventh chord contains a flattened seventh scale degree while the German sixth chord contains an augmented sixth interval. Even though they may sound identical, their function and resolution is different based on the key.
How is a dominant seventh chord constructed?
-A dominant seventh chord is constructed by taking the fifth scale degree of a major or minor key and building a major triad above it, then adding a minor seventh.
How is a German sixth chord constructed?
-A German sixth chord is constructed by taking the lowered sixth scale degree in a major key, building an augmented sixth above it, adding the tonic (first scale degree), and then a perfect fifth above the lowered sixth.
How does a dominant seventh chord usually resolve?
-A dominant seventh chord usually resolves to the tonic chord or the submediant chord. The seventh resolves down by step and the third resolves up by step.
How does a German sixth chord usually resolve?
-A German sixth chord usually resolves to the dominant chord or to a tonic chord in second inversion before resolving to the dominant.
Why does the notation matter when writing these chords?
-The notation matters because it indicates the function and resolution of the chord. Using an enharmonic spelling that mismatches the function can lead to incorrect voice leading and harmonic resolution.
What opportunities do enharmonic spellings provide when composing?
-Enharmonic spellings allow composers to transition between keys smoothly or surprise the listener by changing function. A German sixth could resolve to the dominant in a new key by respelling notes enharmonically.
What is an enharmonic interval?
-An enharmonic interval is where two intervals sound the same pitch but are written differently using different note names. For example, an augmented fifth and a minor sixth are enharmonically equivalent.
Can a German sixth chord contain diatonic notes from the key signature?
-No, a German sixth chord contains chromatic notes that are not found in the key signature of the prevailing key. The chord can function in that key but uses notes from outside the key signature.
What resources are available to learn more about chord progressions?
-The video recommends Music Matters advanced theory and Bach chorale courses. Their website www.mmcourses.co.uk contains additional music theory resources.
Outlines
๐ Introducing the difference between dominant sevenths and German sixths
Paragraph 1 introduces the video's purpose of explaining the difference between dominant seventh chords and German sixth chords. It notes that these two chords sound the same but function differently harmonically. Examples of each chord are provided in the keys of D-flat major and C major.
๐ฒ How dominant sevenths and German sixths resolve and progress
Paragraph 2 explains the conventional voice leading rules for resolving a dominant seventh chord versus an augmented sixth chord like the German sixth. It notes that dominant sevenths usually resolve to chord I or VI, while German sixths go to chord V or I in second inversion before V. Examples demonstrate these conventional resolutions.
๐ค Using enharmonic differences functionally
Paragraph 3 summarizes that while dominant sevenths and German sixths may sound identical, their enharmonic spellings imply different harmonic functions. Composers can utilize these enharmonic differences to modulate between keys. The video's purpose of clarifying the distinction between these chord types is recapped.
Mindmap
Keywords
๐กDominant seventh chord
๐กGerman sixth chord
๐กVoice leading
๐กEnharmonic
๐กChromatic chord
๐กDiatonic chord
๐กPredominant chord
๐กResolving
๐กAugmented sixth interval
๐กFunction
Highlights
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Transcripts
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