A Diminished Piano Chord

Root
A
Min 3rd
C
b 5th
Eb
E
G
B
D
F
F
A
C
E
A
C
Eb

The Notes in an A Diminished Chord

The Root

This is one is easy. All you have to do to find the root of a chord is look at the name of the chord. It's the first part of the name! If it's an A Diminished chord, the root is A!

The Min 3rd

The minor third of an A Diminished chord is C. The minor third is up three half-steps from the Root.

Finding C from A step by step:

  • Start on: A
  • Step 1: move up to Bb
  • Step 2: move up to B
  • Step 3: Land on C
Min 3rd
C
Root
A
1
2
  • Bb is a minor second above A.
  • B is a major 2nd above A.
  • C is a minor third above A.

The b 5th

The flat fifth of an A Diminished chord is Eb. The flat fifth is down six half-steps from the Root -- but it's easier to just think of it as a variation on the fifth. Once you know your fifths, the flat fifth and sharp fifth are a lot easier to find.

Finding Eb from A step by step:

  • Start on: A
  • Step 1: move down to G#
  • Step 2: move down to G
  • Step 3: move down to F#
  • Step 4: move down to F
  • Step 5: move down to E
  • Step 6: Land on Eb
b 5th
Eb
Root
A
1
2
3
4
5
  • G# is a minor second below A.
  • G is a major 2nd below A.
  • F# is a minor third below A.
  • F is a major third below A.
  • E is a fourth below A.
  • Eb is a flat fifth below A.

The Inversions of A Diminished

Root Position

Root
A
Min 3rd
C
b 5th
Eb
E
G
B
D
F
F
A
C
E
A
C
Eb

1st Inversion

Min 3rd
C
b 5th
Eb
Root
A
E
G
B
D
F
F
A
C
E
C
Eb
A

2nd Inversion

b 5th
Eb
Root
A
Min 3rd
C
E
G
B
D
F
F
A
C
E
Eb
A
C

Other A Chords