Information about the diminished second interval

Name

This interval is called: Diminished second

Abbreviation

You can use the somewhat shorter name "d2" to indicate a Diminished second.

Construct

How to build a diminished second interval?

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

  1. Count the amount of naturals used
  2. Count the steps between de two notes

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

The following example is for a diminished second from C3. Outcome: Dbb3

1.
A Diminished second uses 2 naturals.
Example: C3 D3
2.
A Diminished second has 0 semitones between the notes.
Example: C3 Db3 D3 Eb3 E3 F3 Gb3 G3 Ab3 A3 Bb3 B3 C4 Db4 D4 Eb4 E4 F4 Gb4 G4 Ab4 A4 Bb4 B4 C5

Cheatsheet

Tranposed for each note

You can use the following cheatsheet to check the Diminished second for each root note.
Cb3 ↠ Dbbb3
C3 ↠ Db3
C3 ↠ Dbb3
C3 ↠ D3
C#3 ↠ Db3
C3 ↠ D3
Db3 ↠ Ebbb3
D3 ↠ Eb3
D3 ↠ Ebb3
D3 ↠ E3
D#3 ↠ Eb3
D3 ↠ E3
Eb3 ↠ Fbb3
E3 ↠ F3
E3 ↠ Fb3
E3 ↠ F3
E#3 ↠ F3
E3 ↠ F3
Fb3 ↠ Gbbb3
F3 ↠ Gb3
F3 ↠ Gbb3
F3 ↠ G3
F#3 ↠ Gb3
F3 ↠ G3
Gb3 ↠ Abbb3
G3 ↠ Ab3
G3 ↠ Abb3
G3 ↠ A3
G#3 ↠ Ab3
G3 ↠ A3
Ab3 ↠ Bbbb3
A3 ↠ Bb3
A3 ↠ Bbb3
A3 ↠ B3
A#3 ↠ Bb3
A3 ↠ B3
Bb3 ↠ Cbb4
B3 ↠ C4
B3 ↠ Cb4
B3 ↠ C4
B#3 ↠ C4
B3 ↠ C4