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Information about the perfect eleventh interval

Name

This is the perfect eleventh interval.

Abbreviation

This interval is abbreviated with P11.

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Construct

How to construct the perfect eleventh interval?

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

1 • Count the amount of naturals used
2 • Count the semitone steps between the two notes

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

The following example is for a minor second from C3. Outcome: F4

1 • The perfect eleventh spans 11 naturals.
C3  ↠  D3  ↠  E3  ↠  F3  ↠  G3  ↠  A3  ↠  B3  ↠  C4  ↠  D4  ↠  E4  ↠  F4
2 • The perfect eleventh has 17 semitones between the notes.
C3  ↠  C3  ↠  D3  ↠  D3  ↠  E3  ↠  F3  ↠  F3  ↠  G3  ↠  G3  ↠  A3  ↠  A3  ↠  B3  ↠  C4  ↠  C4  ↠  D4  ↠  D4  ↠  E4  ↠  F4

Cheatsheet

The perfect eleventh transposed from each note

C
F
C
F
C
F
D
G
D
G
D
G
E
A
E
A
E
A
F
B
F
B
F
B
G
C
G
C
G
C
A
D
A
D
A
D
B
E
B
E
B
E

Chords

Which chords use the perfect eleventh interval?

Scales

Which scales use the perfect eleventh interval?

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