Twelve TheoryMath + Music Playground

Explore interactive music theory and music by numbers through Free Play, Math Mode, Chord Game, Circle Counting, the Triad Chart, Chord Progressions, Church Modes, the Counterpoint Game, WTC, Dodecachordon, Harmonic Cone, the Harmonics Quiz, Frequency Chart, Harmonic Wave, Waveforms, Harmonic Polygons, Tuning String, Sheet Music, Musical Circles, and Ear Training.

Chord progressions

Separate chords with spaces or dashes. Uppercase = major (IV); lowercase = minor (iv). Use ° or o for diminished (vii°), + for augmented (III+). Triads only.

Fixed: C = 1. Blue = odd; pink = even.

D♭ major progression with fixed numbers
ChordFixed numbers
ID♭ major
D♭–F–A♭
2–6–9
IVG♭ major
G♭–B♭–D♭
7–11–2
VA♭ major
A♭–C–E♭
9–1–4
Printables

Uses your current key, progression, and number setting. On iPhone, open the PDF and use Share to print or save it.

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