Information about the augmented third interval

Name

This interval is called: Augmented third

Abbreviation

You can use the somewhat shorter name "A3" to indicate a Augmented third.

Construct

How to build a augmented third 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 augmented third from C3. Outcome: E#3

1.
A Augmented third uses 3 naturals.
Example: C3 D3 E3
2.
A Augmented third has 5 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 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5

Cheatsheet

Tranposed for each note

You can use the following cheatsheet to check the Augmented third for each root note.
Cb3 ↠ E3
C3 ↠ E3
C3 ↠ E#3
C3 ↠ E3
C#3 ↠ E##3
C3 ↠ E3
Db3 ↠ F#3
D3 ↠ F3
D3 ↠ F##3
D3 ↠ F3
D#3 ↠ F###3
D3 ↠ F#3
Eb3 ↠ G#3
E3 ↠ G3
E3 ↠ G##3
E3 ↠ G3
E#3 ↠ G###3
E3 ↠ G#3
Fb3 ↠ A3
F3 ↠ A3
F3 ↠ A#3
F3 ↠ A3
F#3 ↠ A##3
F3 ↠ A3
Gb3 ↠ B3
G3 ↠ B3
G3 ↠ B#3
G3 ↠ B3
G#3 ↠ B##3
G3 ↠ B3
Ab3 ↠ C#4
A3 ↠ C4
A3 ↠ C##4
A3 ↠ C4
A#3 ↠ C###4
A3 ↠ C#4
Bb3 ↠ D#4
B3 ↠ D4
B3 ↠ D##4
B3 ↠ D4
B#3 ↠ D###4
B3 ↠ D#4