The Common ToneWhere the Sacred and the Profane Share the Same Cup

Popular music theory · a book, a lab, and essays

Music Theory with a Hearth

Music theory that takes your music seriously. A book about popular music, published here one chapter a week — free to read, with drills, quizzes and a companion essay alongside.

No ads, no login, one-click unsubscribe.

The ivory cover of The Sound and the Theory: a coffee cup and a musical staff turning into a waveform.

The book

The Sound and the Theory

Signifying Something

Douglas Gwynn Smith

A book published by The Common Tone.

Start reading at 1.1

The whole book, as it arrives

Thirty-four chapters in four units, one each Sunday at 6 PM Pacific. Every title is here from the start; they light up as they arrive. 5 are out now. About the book →

Unit IFundamentals

  1. 1.1Pop Music, Huh?
  2. 1.2Lines and Dots and Blobs
  3. 1.3It’s About Time
  4. 1.4Scaling the Heights
  5. 1.5At the Interval
  6. 1.6Measure for MeterSunday 11 October · 6 PM Pacific
  7. 1.7Drones, Pedals and Layers
  8. 1.8Powerful Chords and More
  9. 1.9Triads and Sus Chords

Unit IIDiatonic Practices

  1. 2.1The Rhythm Section and Stream Leading
  2. 2.2Harmony
  3. 2.3Primary Chords and the Dual Paradigms
  4. 2.4Melody and Phrasing
  5. 2.5Weak Beat Non-chord Tones
  6. 2.6Strong Beat Non-chord Tones
  7. 2.7Chord Schemata
  8. 2.8Modes
  9. 2.9Basic Blues

Unit IIIChromatic Practices

  1. 3.1Secondary Dominance
  2. 3.2Diminished 7th Chords
  3. 3.3Extended Chords
  4. 3.4Modal Mixture
  5. 3.5Chromatic Mediants and Line Clichés
  6. 3.6Parallel Pentatonicism
  7. 3.7Advanced Blues

Unit IVAdvanced Concepts

  1. 4.1Echoes of El Andalus
  2. 4.2Altered Dominants
  3. 4.3Aug 6th Chords and Tritone Substitution
  4. 4.4Enharmonic Diminished 7th Chords
  5. 4.5Advanced Modulation
  6. 4.6Equal Division of the Octave
  7. 4.7Advanced Rhythm and Meter
  8. 4.8Advanced Form
  9. 4.9Omnibus Progressions

What’s here

PracticeOpen

Drills, quizzes, listening

Try what each chapter teaches, with feedback as you go.Go to Practice →
The labOpen

Tools that work in the browser

Change something and hear what happens. No accounts.Into the Lab →
The essaysWeekly

Close listening, in writing

One record, one idea, one figure.Read the essays →