The A sharp augmented chord (A#+) is an A sharp Major chord, with a raised 5th. It contains the notes A#, Cx (C double sharp) and Ex (E double sharp).

The C double sharp (Cx) and E double sharp (Ex) are quite unusual notes to see written. In reality, these notes are effectively the same as D and F#, respectively. Technically though, the third note of the A sharp Major scale is C double sharp, which is why it is included in the chord. Likewise, technically, the 5th note of the A sharp Major scale is E sharp, therefore, raising the 5th by a semitone produces E double sharp.

A sharp augmented itself is essentially the same chord as B flat augmented, which is much more commonly used.

Each note of the A sharp augmented chord is separated by an interval of a Major 3rd. Because every interval inside the B augmented chord is identical, it is known as a symmetrical chord. Another way of looking at this is as follows – If you play an augmented chord starting from any of the notes inside the A#+ chord, the new chord will contain the same notes as the A sharp augmented chord:

  • The A#+ augmented chord contains the notes A#, Cx (C double sharp, which is the same as D), Ex (E double sharp, which is the same as F#)
  • The D augmented chord contains the notes D, F#, A#
  • The F# augmented chord contains the notes F#, A#, Cx

Some Quick A#+ Chord Theory

  • The A sharp augmented chord contains the notes A#, Cx (C double sharp) and Ex (E double sharp).
  • The A#+ chord is produced by playing the 1st (root), 3rd and sharp 5th note of the A sharp Major scale.
  • The B augmented chord (just like all augmented chords) contains the following intervals (from the root note): Major 3rd, Major 3rd, Major 3rd (back to the root note).
  • A sharp augmented is an A# chord, with the E# raised to Ex (E double sharp).
  • The A# augmented chord resolves naturally to the D# minor or D# Major chord.

10 Ways To Play The A Sharp Augmented Chord

If you’ve come to this page just to view some chord diagrams for A#+, here they are.

A Sharp Augmented Chord 10 Shapes

Further Reading

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