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Information about the diminished second interval

Name

This is the diminished second interval.

Abbreviation

This interval is abbreviated with d2.

Practice the d2 interval

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Construct

How to construct the diminished second interval?

To construct an interval correctly you must always use two steps.

1 • Count the amount of naturals used
2 • Count the semitone steps between the two notes

At first, and with easy intervals, this may seem unnecessary, but when advancing to more difficult intervals and musical keys they will become more mandatory.

The following example is for a minor second from C3. Outcome: D3

1 • The diminished second spans 2 naturals.
C3  ↠  D3
2 • The diminished second has 24 semitones between the notes.
C3  ↠  D3  ↠  D3  ↠  E3  ↠  E3  ↠  F3  ↠  G3  ↠  G3  ↠  A3  ↠  A3  ↠  B3  ↠  B3  ↠  C4  ↠  D4  ↠  D4  ↠  E4  ↠  E4  ↠  F4  ↠  G4  ↠  G4  ↠  A4  ↠  A4  ↠  B4  ↠  B4  ↠  C5

Cheatsheet

The diminished second transposed from each note

C
Db
C
D
C
D
D
Eb
D
E
D
E
E
F
E
F
E
F
F
Gb
F
G
F
G
G
Ab
G
A
G
A
A
Bb
A
B
A
B
B
C
B
C
B
C

Practice the diminished second interval

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Chords

Which chords use the diminished second interval?

Scales

Which scales use the diminished second interval?

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