Understanding Triads, Chord Construction, and Progressions in Music Theory

Added:

Triad Basics
Major vs Minor
Chord Qualities
Chord Inversions
Building Chords
Chord Practice
Progressions
Key Changes
Lesson Review

Triad Basics

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Playing Section
  • 1

    A triad is a three-note chord built by skipping notes.

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    The notes are called root, third, and fifth in sequence.

  • 3

    Major, minor, diminished, and augmented are triad types.

Understanding basic musical intervals, specifically major and minor thirds, which are the fundamental building blocks of triad construction.
Familiarity with the major scale structure (whole and half step patterns) and scale degree numbers.
Basic knowledge of key signatures and how to identify pitch names on the musical staff.
An understanding of the chromatic scale and how accidentals (sharps, flats, and naturals) alter pitches.
Introduction to seventh chords (major, minor, dominant, half-diminished, and diminished 7ths) by adding a fourth voice to the triad.
Principles of voice leading and smooth part-writing, demonstrating how to transition between chord inversions efficiently.
Exploring more advanced diatonic chord progressions, such as the ubiquitous ii-V-I progression in jazz and classical music.
Applying Roman Numeral Analysis to analyze the harmonic structure of existing musical scores and classical compositions.
Introduction to chord extensions (9ths, 11ths, and 13ths) and suspended chords (sus2, sus4) to enrich harmonic texture.
80.1K views1.8Klikes16:37@LessonsOnTheWebOriginal Release: 2013-06-25

Triads are three-note chords constructed from the root, third, and fifth notes of a scale, where major triads have four half-steps between the root and third (bright/happy sound), minor triads have three half-steps (dark/sad sound), and diminished triads have both the third and fifth lowered by half-steps (tense sound); chord inversions rearrange these notes by moving the root to different positions (first inversion moves root to top, second inversion moves the middle note to top), while chord progressions like the common I-IV-V-I pattern provide directional movement in music by connecting chords based on their scale degrees.