The C Dominant Seventh chord contains C, E, G, B♭. Formula: 1–3–5–♭7.
A c dominant seventh is a major triad plus a minor seventh.
Preserve the written chord spelling shown here; keyboard equivalence does not rename the chord.
Choose a position to keep the four written notes, sounding keys, bass note, playback and print reference synchronized.
C7 uses 1–3–5–♭7: C–E–G–B♭.
a major triad plus a minor seventh
Compared with C major, add the minor seventh above the root.
A seventh chord has four chord tones and therefore four positions: root position plus three inversions. The slash symbol identifies the written bass note.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | C7 | C4–E4–G4–B♭4 | C4 |
| First inversion | C7/E | E4–G4–B♭4–C5 | E4 |
| Second inversion | C7/G | G4–B♭4–C5–E5 | G4 |
| Third inversion | C7/B♭ | B♭4–C5–E5–G5 | B♭4 |
No independently authorized fingering dataset is provided for N2C.
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: seventh chords are four-note chords; major seventh, dominant seventh, minor seventh and half-diminished seventh constructions; four positions including third inversion; written spelling and inversion principles
Scope limit: Theory and spelling cross-check only; no source prose, artwork, fingering or PDF is copied.
Checked 2026-09-12 · N2C-OMT-SEVENTHOpen Music Theory
Supports: C7 dominant convention; maj7/min7/half-diminished symbol families; slash bass notation
Scope limit: Theory and spelling cross-check only; no source prose, artwork, fingering or PDF is copied.
Checked 2026-09-12 · N2C-OMT-SYMBOLSPianoChord.org
Supports: competitor family coverage; cross-check examples for major/minor seventh
Scope limit: Theory and spelling cross-check only; no source prose, artwork, fingering or PDF is copied.
Checked 2026-09-12 · N2C-PC-SEVENTHC, E, G, B♭.
1–3–5–♭7.
Three inversions, in addition to root position.
Select the four pitch classes that make C7, then check your answer.
This one-octave exercise checks the exact four-note pitch-class set. Order and inversion do not affect the result; missing and extra notes are reported, while fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: C–E–G–B♭ · Formula: 1, 3, 5, ♭7
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.