Information about the perfect unison interval

Name

This interval is called: Perfect unison

Abbreviation

You can use the somewhat shorter name "P1" to indicate a Perfect unison.

Construct

How to build a perfect unison 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 perfect unison from C3. Outcome: C3

1.
A Perfect unison uses 1 naturals.
Example: C3
2.
A Perfect unison has 0 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 Perfect unison for each root note.
Cb3 ↠ Cb3
C3 ↠ C3
C3 ↠ C3
C3 ↠ C3
C#3 ↠ C#3
C3 ↠ C3
Db3 ↠ Db3
D3 ↠ D3
D3 ↠ D3
D3 ↠ D3
D#3 ↠ D#3
D3 ↠ D3
Eb3 ↠ Eb3
E3 ↠ E3
E3 ↠ E3
E3 ↠ E3
E#3 ↠ E#3
E3 ↠ E3
Fb3 ↠ Fb3
F3 ↠ F3
F3 ↠ F3
F3 ↠ F3
F#3 ↠ F#3
F3 ↠ F3
Gb3 ↠ Gb3
G3 ↠ G3
G3 ↠ G3
G3 ↠ G3
G#3 ↠ G#3
G3 ↠ G3
Ab3 ↠ Ab3
A3 ↠ A3
A3 ↠ A3
A3 ↠ A3
A#3 ↠ A#3
A3 ↠ A3
Bb3 ↠ Bb3
B3 ↠ B3
B3 ↠ B3
B3 ↠ B3
B#3 ↠ B#3
B3 ↠ B3