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Dim & aug familyIII+maj7 in A harmonic minor

C augmented major seventh chord

Cmaj7♯5

C augmented major seventh

Piano root position

  • Root
  • 3
  • ♯5
  • 7

Guitar standard tuning

Open chord

Uses open strings, no barre.

E×ADGBe12345CEG♯

Finger: 1 index, 2 middle, 3 ring, 4 little

Notation treble clef

𝄞♯

Intervals

12 semitones
  1. C1
  2. ♭2
  3. 2
  4. ♭3
  5. E3
  6. 4
  7. ♭5
  8. 5
  9. G♯♯5
  10. 6
  11. ♭7
  12. B7
  • C Root
  • E Major 3rd
  • G♯ Augmented 5th
  • B Major 7th

About this chord

What is a C augmented major seventh chord?

Cmaj7♯5 is built from 4 notes: C (the root), E (the 3), G♯ (the ♯5), B (the 7). An augmented triad with a major seventh: the bright, floating III chord of the harmonic and melodic minor.

Notes
C · E · G♯ · B
Formula
1 · 3 · ♯5 · 7
Also written
C+maj7 · CΔ7♯5
Found in
III+maj7 in A harmonic minor

Scales that contain Cmaj7♯5

Neighbours

Chords close to Cmaj7♯5

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All 348 chords

Every chord type on every root, each with its own page.

C

D♭

D

E♭

E

F

G♭

G

A♭

A

B♭

B