Bb Diminished 7th Piano Chord

Root
Bb
Min 3rd
Db
Maj 6th
G
b 5th
E
E
G
B
D
F
F
A
C
E
Bb
Db
E
G

The Notes in a Bb Diminished 7th Chord

The Root

You'll have no trouble finding the root of a Bb Diminished 7th chord, because it's what gives a Bb Diminished 7th chord it's name: It's the note Bb.

The Min 3rd

The minor third of a Bb Diminished 7th chord is Db. The minor third is up three half-steps from the Root.

Finding Db from Bb step by step:

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

The Maj 6th

The major sixth of a Bb Diminished 7th chord is G. The major sixth is down three half-steps from the Root (a minor third down).

In diminished chords, the major sixth is also known as the diminished seventh. For the purposes of this tutorial, we'll be learning it as the major sixth, since it's easier to consider it separately than the other two sevenths, the major seventh (M7) and minor seventh (m7)

Finding G from Bb step by step:

  • Start on: Bb
  • Step 1: move down to A
  • Step 2: move down to Ab
  • Step 3: Land on G
Maj 6th
G
Root
Bb
1
2
  • A is a minor second below Bb.
  • Ab is a major 2nd below Bb.
  • G is a minor third below Bb. The maj 6th is down a minor third? Confusing, right? The note G is down 3 half-steps from Bb, but up 9 half-steps from Bb:
Maj 6th
G
Root
Bb
1
2
3
4
5
6
7
8

The Inversions of Bb Diminished 7th

Root Position

Root
Bb
Min 3rd
Db
Maj 6th
G
b 5th
E
E
G
B
D
F
F
A
C
E
Bb
Db
E
G

1st Inversion

Min 3rd
Db
b 5th
E
Maj 6th
G
Root
Bb
E
G
B
D
F
F
A
C
E
Db
E
G
Bb

2nd Inversion

b 5th
E
Maj 6th
G
Root
Bb
Min 3rd
Db
E
G
B
D
F
F
A
C
E
E
G
Bb
Db

3rd Inversion

Maj 6th
G
Root
Bb
Min 3rd
Db
b 5th
E
E
G
B
D
F
F
A
C
E
G
Bb
Db
E

How to find Bb Diminished 7th with my three-finger-method

This is the method taught in my book "How to Speed Read Piano Chord Symbols"

Step 1) Use the Fourth

Find the Root and the Fourth up from the Root. (See my tutorial on finding fourths).

Root
Bb
Root
Bb
4th
Eb

Step 2) Move the right hand down

Move the root a minor third down (three keys to the left on the piano) and the other note (the fourth) a whole-step to the left (two keys down on the piano).

Root
Bb
Maj 6th
G
Min 3rd
Db

How to Find 7th Chords with Nate's Three Finger Method

  • Major 7th chords: bring both fingers down a half-step
  • Minor 7th chords: bring both fingers down a whole-step
  • Dominant 7th chords: bring the Root down a whole-step, the fourth down a half-step
  • Diminished 7th chords: bring the Root down a minor third, the fourth down a whole-step

If you would like to learn more about my method, pick up "How to Speed Read Piano Chord Symbols".

Other Bb Chords