Also C#dim7, Edim7

A#dim7 (A# diminished 7th): A# C# E G. Formula 1 ♭3 ♭5 ♭♭7. Also C#dim7, Edim7, Gdim7. Minor 3rds stacked all the way: symmetrical and very tense, it works as a passing chord and as a dominant with a ♭9.

Made of4

Notes4

Contains & part of20

Scales that contain it20

Inversions4

  • A#dim77

    Root position · A# C# E G

  • A#dim7/C#6/5

    1st inversion · C# E G A#

  • A#dim7/E4/3

    2nd inversion · E G A# C#

  • A#dim7/G4/2

    3rd inversion · G A# C# E

Relatives8

Same notes, other names3

Type1

Genres that use it4

Where it goes13

One small move away12

Its dominant1