major seventh sharp eleven chord generator
Build and Listen to Major Seventh Sharp Eleven Chords
Cmaj7(sharp11) contains C, E, G, B and F-sharp. Its augmented eleventh is eighteen semitones above C. The selected formula keeps the perfect fifth G and includes no ninth; each sounded member is listed explicitly.
Compare Cmaj7(sharp11) with Cmaj7 to remove only F-sharp. Then listen to G and F-sharp separately. At root F, verify F, A, C, E and B; B natural is the sharp eleventh over F, not B-flat.
Play the instrument ↑- Chord formula
- 1 · 3 · 5 · 7 · ♯11
- Semitone offsets
- 0 · 4 · 7 · 11 · 18
- C reference
- C · E · G · B · F♯
- Sound
- Sine reference · A4 = 440 Hz
Raise the eleventh above a major seventh core
Cmaj7(sharp11) contains C, E, G, B and F-sharp. Its augmented eleventh is eighteen semitones above C. The selected formula keeps the perfect fifth G and includes no ninth; each sounded member is listed explicitly.
The maj7 suffix requires B natural over C. C7(sharp11) instead uses B-flat. Sharp eleven is not a replaced flat fifth here: the reference retains G alongside the upper F-sharp.
- 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 11 semitones above the root in this reference.
- Degree 11 is 18 semitones above the root in this reference.
A listening test for maj7(♯11)
Compare Cmaj7(sharp11) with Cmaj7 to remove only F-sharp. Then listen to G and F-sharp separately. At root F, verify F, A, C, E and B; B natural is the sharp eleventh over F, not B-flat.
The Compare major seventh 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.
Follow the selected bass through each voicing
This 5-tone reference offers 5 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 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.
A sharp eleventh can supply a Lydian color over a major seventh without the natural eleventh F against E. This is a pitch reference; the tool does not choose a melody scale or automatic chord substitution for a song.
Check C, F and A before transposing further
Begin with C and confirm C · E · G · B · 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.
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 →
Answers before you play
Major Seventh Sharp Eleven Chord Questions
What are the notes in C major seventh sharp eleven?
C · E · G · B · F♯. The formula is 1 · 3 · 5 · 7 · ♯11, with semitone offsets 0, 4, 7, 11, 18. These are the complete notes sounded by this generator in root position.
How does this differ from major seventh?
Compare Cmaj7(sharp11) with Cmaj7 to remove only F-sharp. Then listen to G and F-sharp separately. At root F, verify F, A, C, E and B; B natural is the sharp eleventh over F, not B-flat.
Are these standard performance voicings?
A sharp eleventh can supply a Lydian color over a major seventh without the natural eleventh F against E. This is a pitch reference; the tool does not choose a melody scale or automatic chord substitution for a song. The tool states its complete formula and uses close pitch-class rotations for inversion study. Performance omissions and spacing depend on the instrument and musical context.
Can I play and export without a camera?
Yes. Click Play chord or Play arpeggio for local audio. Download WAV saves the displayed chord even if live audio is unavailable. Camera and microphone permission are never requested.
Why does the displayed accidental look unusual?
The maj7 suffix requires B natural over C. C7(sharp11) instead uses B-flat. Sharp eleven is not a replaced flat fifth here: the reference retains G alongside the upper F-sharp. Note letters follow chord degrees; MIDI numbers show the actual pitches at A4 = 440 Hz.