Dominant Eleventh Chord Generator

Hear the third against the natural eleventh

The complete dominant eleventh stack extends C9 with F: C, E, G, B-flat, D and F. The major third E and natural eleventh F can create a strong semitone-related tension. This tool deliberately includes both so the formula can be examined.

A C11 symbol is interpreted with different omissions in performance. This generator states its exact complete formula. C7sus4 removes the third; the displayed C11 reference keeps it. A sharp eleventh is a separate altered extension.

• Degree 1 is 0 semitones above the root in this reference.
• Degree 3 is 4 semitones above the root in this reference.
• Degree 5 is 7 semitones above the root in this reference.
• Degree 7 is 10 semitones above the root in this reference.
• Degree 9 is 14 semitones above the root in this reference.
• Degree 11 is 17 semitones above the root in this reference.

A listening test for 11

Compare C11 with C9 to hear the added F. Play E and F separately, then arpeggiate the full stack. Try root G and identify B versus C, the same third-eleventh relationship transposed to a different root.

The Compare dominant ninth button retains your chosen root and octave and plays the comparison in root position. Set the current chord to root position for a direct comparison. The note buttons let you isolate the chord member that makes this quality different.

Dominant Ninth chord generator →

Follow the selected bass through each voicing

This 6-tone reference offers 6 positions. Root position starts with degree 1; First inversion starts with degree 3; Second inversion starts with degree 5; Third inversion starts with degree 7; Fourth inversion starts with degree 9; Fifth inversion starts with degree 11. The bass suffix beneath the chord symbol identifies the actual lowest tone.

Root position preserves compound ninths, elevenths and thirteenths at their original height. The inversion selector first moves the extensions into one octave, sorts by sounding pitch and rotates from the selected degree. These close pitch-class study voicings are different from the complete extended root-position stack; they are not recommended jazz fingerings.

Players often omit the third or use a suspended dominant voicing when a natural eleventh is prominent. Our complete stack is an educational reference, not a claim that all six tones should always be played together.

Learn chord inversions →

Check C, F and A before transposing further

Begin with C and confirm C · E · G · B♭ · D · F. Use the F and A example buttons to transpose the same interval collection. Follow the MIDI values if an enharmonic spelling looks unfamiliar: changing the root shifts every sounding note by the same interval.

Use Root octave 2 for a lower reference or octave 5 for a higher one. A root change keeps your selected voicing; the example buttons return to root position. Reset restores C, octave 3 and root position. Stop sound ends the currently active chord or arpeggio.

All chord formulas and music theory →

What playback and the WAV file contain

The displayed notes are synthesized locally using sine waves after your click. The tool does not create a progression, transcribe a song, provide guitar fingering or simulate an acoustic instrument. No camera, microphone, registration or file upload is needed.

Download WAV saves the currently displayed voicing as a 2.4-second mono PCM file at 44.1 kHz with a short fade. It does not export the comparison chord or an arpeggiated performance. If Web Audio is unavailable, the note display and WAV download remain usable.

Theoretical note names preserve each degree and may use double accidentals. Equal-tempered playback gives enharmonic notes the same frequency. This browser tool does not add new extended-chord gestures to the webcam instrument; that instrument has its own triad, inversion and seventh controls.

Play the separate gesture instrument → · Local processing and privacy →