Scale Theory vs Negative Harmony

You know the theory. You just have to look it up. Scale Theory is a drill tool for musicians who want faster, more reliable recall — key signatures, diatonic harmony, modes, chord functions, and relative minor relationships. Not slower. Not effortful. Just known. What you'll learn: • Key signatures: sharps, flats, and which notes they are, in both directions • Relative minor keys, quizzed both ways • Diatonic triads and seventh chords in every major key — names, qualities, and notes • All seven modes: names, interval formulas, and characteristic chords • Chord functions: identify and spell the dominant seventh and half-diminished chord in any key How it works: Each topic follows a review-then-quiz loop. New items are revealed one piece at a time, so you're predicting the next step before it appears. After every few new items, a recap quiz covers everything learned so far — not just what's recent. A randomized Practice mode presents questions in mixed formats across all keys, with upcoming answers hidden so you can't read ahead. Key signatures follow circle-of-fifths order, which is how keys actually relate to each other. Who it's for: • Players who want to think faster when improvising or reading charts. • Anyone whose theory knowledge lives in their head in a slow, effortful way. • Students prepping for graded exams. This is a drill tool, not a lesson. It assumes you've encountered these concepts — it's here to make them automatic.

Negative Harmony lets you explore one of music theory's most fascinating transformations: reflecting any chord or progression across a tonal axis to produce its harmonic mirror image. TAP ANY CHORD Select a root and quality on the interactive Circle of Fifths. See the original chord and its negative simultaneously, with voice-leading automatically applied. BUILD PROGRESSIONS Add chords to a progression and play them back — originals or negatives — with smooth voice leading between every chord. Common tones are held, not re-attacked. UNDERSTAND THE THEORY Built-in theory section explains the concept from first principles: the axis, the transformation formula, voice leading, and the history from Hugo Riemann to Jacob Collier. 5 SOUNDS Choose from Rhodes, Strings, Choir, Organ, or Synth Pad — the same high-quality soundfont used by professional music apps. MULTILINGUAL Full support for English, Spanish, French, German, Italian, and Portuguese.