Triads — Open Music Theory
Open Music Theory
Supports: diminished triad formula and written tone spelling
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
The E Diminished chord contains E, G, B♭. Formula: 1–♭3–♭5.
The e diminished triad uses a root, minor third and diminished fifth.
Preserve the written note spelling shown for this chord.
Choose a position to keep the written notes, sounding keys, bass note, playback and print reference synchronized.
Edim uses 1–♭3–♭5: E–G–B♭.
Compared with E minor, lower the fifth by one semitone.
The chord tones stay the same while the lowest chord tone changes.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | Edim | E4–G4–B♭4 | E4 |
| First inversion | Edim/G | G4–B♭4–E5 | G4 |
| Second inversion | Edim/B♭ | B♭4–E5–G5 | B♭4 |
Fingerings are not included on this page. The diagram shows note positions, not a prescribed hand shape.
Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.
Read left- and right-hand finger numbersOpen Music Theory
Supports: diminished triad formula and written tone spelling
Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
E, G, B♭.
1–♭3–♭5.
No. The root stays the same; the lowest chord tone changes.
Select the three pitch classes that make Edim, then check your answer.
This one-octave exercise checks pitch classes. Order and octave do not affect the result; fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: E–G–B♭ · Formula: 1, ♭3, ♭5
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.