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Understanding Diminished Harmony
Rating: 5.0 out of 5(1 rating)
14 students
Created byJosh Cook
Last updated 9/2025
English

What you'll learn

  • Constructing diminished and half-diminished chords
  • Using diminished 7th chords for substitutions and modulations
  • Applying diminished scales (whole-half and half-whole) in improvisation
  • Recognizing diminished harmony in classical and romantic repertoire
  • Creating tension and release in compositions and arrangements
  • Building smooth (or dramatic) modulations using diminished chords
  • Applying diminished passing chords in tonal progressions
  • Altering chords into and out of diminished shapes

Course content

2 sections • 15 lectures • 1h 30m total length

  • What is a Diminished Chord?4:36

    Let's start with the basics.

  • Diminished 7th Chords7:51

    Let's add even more tension to our diminished sound!

  • Diminished Substitutions7:10

    Let's talk about how you can swap out specific chords within your progressions for diminished chords.

  • The Whole-Half Diminished Scale4:10
  • The Half-Whole Diminished Scale3:59
  • Extracting Harmony From The Half-Whole Diminished Scale8:36
  • Diminished Chord Resolutions10:28
  • Diminished Modulations9:08
  • Diminished in Late Classical & Romantic Harmony5:53
  • Diminished Passing Chords5:06
  • Minor 7 Flat 5 Chords5:58
  • Altering Chords TO or FROM Diminished7:11
  • Unrelated Diminished Chords2:51
  • Diminished Chord Exercise4:37

Requirements

  • Basic understanding of major and minor chords
  • Intermediate level of piano theory
  • Sufficient time to practice and study this material

Description

Unlock the mystery of diminished harmony and learn how to use it to add drama, tension, and motion to your music. Diminished chords are some of the most powerful—and misunderstood—sounds in Western music. From haunting classical works to lush film scores and jazz improvisation, diminished harmony opens the door to advanced modulations, unexpected chord substitutions, and expressive color.

In this course, you’ll learn:

  • The building blocks of diminished and half-diminished chords

  • How diminished 7th chords function and why they’re so flexible

  • Practical substitutions that transform a simple progression into something cinematic

  • How diminished scales (whole-half and half-whole) provide a roadmap for improvisation and composition

  • Resolution patterns that let you move effortlessly between keys

  • How great composers—from Beethoven to Debussy—used diminished harmony to create unforgettable music

Through clear explanations, real musical examples, and guided exercises, you’ll not only understand diminished harmony, but also apply it directly in your own compositions, arrangements, or improvisations. Whether you’re a songwriter looking for new colors, a pianist or guitarist exploring advanced chords, or a composer interested in film and concert music, this course will give you the tools to confidently integrate diminished harmony into your creative work. By the end, you’ll feel comfortable turning these “scary” chords into one of your strongest and most versatile musical resources.

Who this course is for:

  • Intermediate to advanced piano players, guitarists, and composers
  • Songwriters looking to expand their harmonic palette
  • Musicians interested in film scoring, classical, or jazz harmony
  • Anyone who understands major/minor chords but feels “lost” when diminished harmony comes up
  • Improvisers wanting to add tension, modulation tricks, and expressive movement

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