Is it Really a Half Diminished 7th Chord? - Music Theory
TLDRThe video analyzes the half-diminished seventh chord, explaining its construction and how it differs from the diminished seventh chord. It provides an example in the key of G major, showing how this chord can also be viewed as a borrowed chord from the parallel minor key. The presenter demonstrates the chord's use in a short progression, analyzing how in classical contexts it would be labeled as a borrowed II7 chord from G minor, even though it has the same notes as the half-diminished seventh. Ultimately the video illustrates that this single chord has multiple valid interpretations depending on stylistic context.
Takeaways
- 🎵 The half-diminished seventh chord is distinct from a diminished seventh chord, characterized by a root, flat third, flat fifth, and flat seventh.
- 🤖 Questioning the terminology, it explores whether the half-diminished seventh chord is synonymous with the minor seventh flat five chord.
- 📚 Offers a 'recipe' for constructing a half-diminished seventh chord using the key of C as an example, emphasizing the alteration of intervals based on the major scale.
- 🎶 Demonstrates the chord's construction in different keys, like C and D, to illustrate the concept of flat intervals within the chord structure.
- 📈 Examines the chord in the context of G major, particularly when built on A, to show practical application in music composition.
- 🖥 Presents a musical example in G major to illustrate how the half-diminished seventh chord functions within a piece.
- 💻 Explores the idea of borrowed chords, explaining how a chord can be 'borrowed' from the parallel minor in a major key context.
- 🎤 Discusses the classical naming conventions and functionality of chords, highlighting how the same chord can be understood differently in various musical styles.
- 🎷 Points out the usefulness of the half-diminished seventh chord in creating smooth transitions between chords, using common tones for linkage.
- 📖 Concludes that the half-diminished seventh chord, the minor seventh flat five chord, and certain borrowed chords can be seen as equivalent in function, though named differently depending on the musical context.
Q & A
What is the difference between a diminished seventh chord and a half-diminished seventh chord?
-A diminished seventh chord has minor thirds between all its notes, while a half-diminished seventh chord has a minor third between the root, flat third, and flat fifth, but a major third between the flat fifth and flat seventh.
What notes make up a half-diminished seventh chord built on the note A?
-A half-diminished seventh chord built on A consists of the notes A, C, E-flat, and G.
What is a borrowed chord?
-A borrowed chord is a chord borrowed from the parallel minor or major key. For example, in a major key, borrowing a chord from the parallel minor key.
How can the half-diminished seventh chord be viewed as a borrowed chord in the example given?
-In the key of G major, the A C E-flat G chord can be viewed as a borrowed II7b chord from G minor, since it contains E-flat from the G minor key signature.
What approach chord is used in the example leading to the half-diminished seventh chord?
-The approach chord used is a C major chord (IV in G major), moving then to the A C E-flat G half-diminished seventh.
What inversion is the half-diminished seventh chord in when used as a borrowed chord?
-It is in first inversion, with C as the lowest note.
What other approach could be used instead of the C major chord?
-A D minor chord (IIb in G major) could be used to lead directly to the half-diminished seventh without common tones.
What is the recipe for forming a half-diminished seventh chord on any root note?
-Build a chord with a root note, flattened third, flattened fifth, and flattened seventh scale degrees relative to the key of the root note.
What musical purpose does the half-diminished seventh chord serve in the example?
-It creates an interesting, slightly unexpected harmony approaching the cadence back to the tonic G major chord.
Does viewing this chord as a half-diminished seventh versus a borrowed minor seventh actually change what the chord is?
-No, it amounts to the same chord - just different terminology depending on musical style and analysis perspective.
Outlines
😀 Introducing the half-diminished seventh chord
This paragraph introduces the half-diminished seventh chord, which has a root note, flat third, flat fifth, and flat seventh. It explains the difference between a diminished seventh chord and a half-diminished seventh chord. The chord formula is provided for building a half-diminished seventh chord on any root note within a key.
😉 Using a half-diminished seventh as a borrowed chord
This paragraph provides a music example in G major using a half-diminished seventh chord built on A. It is analyzed as a borrowed chord from G minor, functioning as a II7b. The connection is made between viewing it as a half-diminished seventh chord versus a borrowed minor seventh chord.
🎵 Summary statement on the chord relationships
This concluding paragraph summarizes that the half-diminished seventh chord and the borrowed minor seventh chord from the parallel minor key are equivalent, though described differently based on musical style and context.
Mindmap
Keywords
💡half-diminished seventh chord
💡diminished seventh chord
💡minor third
💡borrowed chord
💡chord functions
💡chord inversion
💡cadence
💡common tones
💡relative minor
💡tonic
Highlights
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Transcripts
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