Piano Chord Reference
Seventh and ninth chord structures on any root, straight to the keys. Choose a root and a chord type, then press Play chord to hear it.
Root
Chord type
Sevenths
Ninths
C Major 7
See this chord on the guitar neck Playable guitar shapes
| Chord | Formula | Notes |
|---|
Notes are spelled by scale degree, so C minor 7 reads C E♭ G B♭. On black-key roots the table uses whichever of the sharp or flat name needs fewer accidentals for that chord.
More tools
- Guitar Chord Reference
The same chord library mapped across the fretboard in standard tuning, so you can see where every tone lives on the neck.
- Guitar Chord Shapes
Major 7, minor 7, half-diminished, diminished, and dominant 9 as playable diagrams, with three movable forms of each.
- Circle Lab
The circle of fifths and fourths on one wheel: key signatures, relative minors, diatonic chords, and progressions you can hear.
- Oscillator Lab
Sine, triangle, saw, square, FM, and noise. Hear each one, read what it is good for, then layer them in a live mixer.
Need a mix, a beat, or broadcast-ready audio? See the production work.