Major Key Harmony
The complete diatonic chord system built on the major scale—seven triads (I, ii, iii, IV, V, vi, vii°) and their seventh-chord extensions that create the harmonic palette of major tonality, from Bach chorales to Beatles songs, providing the bright, stable framework that defines major mode character across classical, jazz, pop, and contemporary composition.
Interactive Visualizations
Complete Major Key Diatonic System
All seven triads and seventh chords with qualities and functions
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Functional Harmony Map in Major
T-PD-D assignment for all diatonic chords
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Chord-Scale Relationships
Which modes correspond to each diatonic chord
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Common Progressions in Major Keys
Top 20 progressions with functional analysis
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Voice Leading Between Diatonic Chords
Common tone and stepwise motion patterns
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Historical Usage Evolution
How major key harmony evolved from Baroque to contemporary
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I. Conceptual Positioning
🎯Problem Solved
What chords naturally occur in a major key and how they function together—major key harmony provides the complete harmonic vocabulary available without chromatic alteration, shows which chords are stable vs. unstable, reveals why certain progressions work smoothly, and establishes the functional relationships (T-PD-D) that govern Western tonal music from Baroque to present day.
🔨Skills Built
- •Derive all diatonic chords from major scale
- •Understand chord quality patterns (M-m-m-M-M-m-d)
- •Assign functional roles to all seven chords
- •Apply diatonic harmony in composition
- •Recognize chord-scale relationships
- •Analyze major key progressions across genres
🔗Connects To
II. Knowledge Architecture
This section will be populated with core concepts, sub-concepts, and micro-concepts in future MDX content.
IV. Charts, Maps & Tables
Visual artifacts will be embedded in MDX content as React components.
V. Logical Learning Sequence
Learning progression will be defined in MDX content.
VII. Analytical Application
Cross-genre examples (classical, jazz, pop, film) will be provided in MDX content.
IX. Cross-Topic Network
Concept bridges and overlapping zones will be detailed in MDX content.
XI. Synthesis & Meta-Understanding
Mastery meaning and transformational impact will be explored in MDX content.