Music theory flashcards: card the arithmetic under the art

WeSolve+ is best for converting theory workbooks and photographed exercises into that deck, and this guide covers the interval layer, the key clock, chord function, and the notation habits worth drilling.

Interval cards: names to semitones and back

Intervals are the field's multiplication table: a perfect fifth is seven semitones, a major third four, a tritone six, and the names card to counts in both directions. Then card the qualities' geometry, what one semitone's shrink does to a major interval, and the inversion rule, a third inverts to a sixth, major inverts to minor. Interval fluency is spent everywhere downstream, chord spelling, transposition, sight analysis, and pausing on a fifth costs exactly what pausing on sec x cost in calculus.

The key clock: signatures as positions, not lists

Key signatures follow the fifths clock: each clockwise step adds a sharp, each counterclockwise a flat, and the order of sharps is itself a fifths chain, F C G D A E B. Card positions, D major carries two sharps, and card the clock moves, what key sits one step clockwise of G. Then the relative pairs, the minor a minor third below its major sharing the signature. Clock cards beat list memorization because the clock generates every answer the list only stores.

Chord cards: quality by stack, function by position

Chords card twice: quality as the stack, major third plus minor third makes a major triad, and function as the scale seat, the chord on the fifth degree is the dominant and it pulls home. The function layer is where analysis questions live, front gives a key and a chord and asks its role, and cadence cards extend it, five to one authentic, four to one plagal, the half cadence parking on five. Quality without function reads chords; function is what explains why the progression moves.

Notation and rhythm: the mechanical layer

Clef reading beyond treble, the alto clef's middle line C, dotted values as halves added, compound meters counted in threes: notation facts card cleanly and pay in speed. Card the rhythm arithmetic as worked fronts, a dotted quarter in six eight gets how many eighths, and card enharmonic pairs, F sharp and G flat as one sound with two spellings whose choice follows the key. This layer is small and mechanical: short cards, exact answers, and points that arrive without any argument.

Page to ear: what cards can and cannot do

Cards drill the page side honestly: interval names, signatures, functions. The ear side, hearing a fifth, catching a cadence, needs sounding practice at an instrument or with your course's audio materials, and pretending text cards teach hearing would be the field's version of the syntax trap. The honest pairing: cards make the vocabulary instant so ear practice spends attention on sound rather than on remembering what a plagal cadence was called.

Where this sits in WeSolve+

Theory workbooks and photographed exercises become decks through photo conversion, misses feed weak topic analysis, and the schedule keeps the interval table instant. The AP Music Theory unit pages live in the exam library. Siblings: physics shares the arithmetic-under-art instinct, English vocabulary the term discipline, and the index holds the rest. The same deck can start from your own notation sheet rather than from this set: a flashcard maker turns a photographed page into cards in the same shape.

Last updated: 2026-09-24 · Written with AI assistance and reviewed before publishing.