Music Theory
Trainer

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Studies for the daily practice

— Today's training · #002 —

Etudle

Three rounds, fifteen flashcards, one shot per day. Same training worldwide — race the clock and build your streak.

2026-04-27 · 3 rounds · 15 cards

Chord Trainer

Triads and extended chords across every root — major, minor, diminished, augmented, plus optional 7ths, 9ths, and 13ths. Spell the chord on a staff or by typing, or name it from its notes.

I. Chord → notes
II. Notes → chord

— Opus II —

Circle of Fifths

Every key signature around the circle, major and minor. Mark the sharps and flats, or read the scale and name the key.

I. Key → sharps & flats
II. Scale → name the key

— Opus III —

Interval Trainer

2nds through 7ths plus the 4th, tritone, and 5th. Toggle which intervals to study, then name the note that lies above each root.

I. Toggle any subset
II. Root + interval → note

— Opus IV —

A single note shown on a music staff, piano keyboard, or guitar fretboard. Identify the letter and accidental — fret position and octave randomise per card.

I. Choose your displays
II. Display → name the note