Information about the ninth interval

Name

This interval is called: Ninth

Abbreviation

You can use the somewhat shorter name "M9" to indicate a Ninth.

Chord name

Nine

Construct

How to build a ninth 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 ninth from C3. Outcome: D4

1.
A Ninth uses 9 naturals.
Example: C3 D3 E3 F3 G3 A3 B3 C4 D4
2.
A Ninth has 14 semitones between the notes.
Example: C3 C#3 D3 D#3 E3 F3 F#3 G3 G#3 A3 A#3 B3 C4 C#4 D4

Cheatsheet

Tranposed for each note

You can use the following cheatsheet to check the Ninth for each root note.
Cb3 ↠ Db4
C3 ↠ D4
C3 ↠ D4
C3 ↠ D4
C#3 ↠ D#4
C3 ↠ D4
Db3 ↠ Eb4
D3 ↠ E4
D3 ↠ E4
D3 ↠ E4
D#3 ↠ E#4
D3 ↠ E4
Eb3 ↠ F4
E3 ↠ F4
E3 ↠ F#4
E3 ↠ F4
E#3 ↠ F##4
E3 ↠ F4
Fb3 ↠ Gb4
F3 ↠ G4
F3 ↠ G4
F3 ↠ G4
F#3 ↠ G#4
F3 ↠ G4
Gb3 ↠ Ab4
G3 ↠ A4
G3 ↠ A4
G3 ↠ A4
G#3 ↠ A#4
G3 ↠ A4
Ab3 ↠ Bb4
A3 ↠ B4
A3 ↠ B4
A3 ↠ B4
A#3 ↠ B#4
A3 ↠ B4
Bb3 ↠ C5
B3 ↠ C5
B3 ↠ C#5
B3 ↠ C5
B#3 ↠ C##5
B3 ↠ C5