Name
This interval is called: Augmented ninth
Abbreviation
You can use the somewhat shorter name "A9" to indicate a Augmented ninth.
Chord name
Sharp nine
for iOS and Android
Construct
How to build a augmented ninth interval?
To construct an interval correctly you must always use two steps.
- Count the amount of naturals used
- 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 augmented ninth from C3. Outcome: D#4
1.
A Augmented ninth uses
9 naturals.
Example: C3 ↠ D3 ↠ E3 ↠ F3 ↠ G3 ↠ A3 ↠ B3 ↠ C4 ↠ D4
Example: C3 ↠ D3 ↠ E3 ↠ F3 ↠ G3 ↠ A3 ↠ B3 ↠ C4 ↠ D4
2.
A Augmented ninth has
15 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 ↠ D#4
Example: C3 ↠ C#3 ↠ D3 ↠ D#3 ↠ E3 ↠ F3 ↠ F#3 ↠ G3 ↠ G#3 ↠ A3 ↠ A#3 ↠ B3 ↠ C4 ↠ C#4 ↠ D4 ↠ D#4
Cheatsheet
Tranposed for each note
You can use the following cheatsheet to check the Augmented ninth for
each root note.
Cb3 ↠ D4
C3 ↠ D4
C3 ↠ D#4
C3 ↠ D4
C#3 ↠ D##4
C3 ↠ D4
Db3 ↠ E4
D3 ↠ E4
D3 ↠ E#4
D3 ↠ E4
D#3 ↠ E##4
D3 ↠ E4
Eb3 ↠ F#4
E3 ↠ F4
E3 ↠ F##4
E3 ↠ F4
E#3 ↠ F###4
E3 ↠ F#4
Fb3 ↠ G4
F3 ↠ G4
F3 ↠ G#4
F3 ↠ G4
F#3 ↠ G##4
F3 ↠ G4
Gb3 ↠ A4
G3 ↠ A4
G3 ↠ A#4
G3 ↠ A4
G#3 ↠ A##4
G3 ↠ A4
Ab3 ↠ B4
A3 ↠ B4
A3 ↠ B#4
A3 ↠ B4
A#3 ↠ B##4
A3 ↠ B4
Bb3 ↠ C#5
B3 ↠ C5
B3 ↠ C##5
B3 ↠ C5
B#3 ↠ C###5
B3 ↠ C#5