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Information about the augmented undecime interval

Name

This is the augmented undecime interval.

Abbreviation

This interval is abbreviated with A11.

Practice the A11 interval

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Construct

How to construct the augmented undecime 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 augmented undecime spans 11 naturals.
C3  ↠  D3  ↠  E3  ↠  F3  ↠  G3  ↠  A3  ↠  B3  ↠  C4  ↠  D4  ↠  E4  ↠  F4
2 • The augmented undecime has 18 semitones between the notes.
C3  ↠  C3  ↠  D3  ↠  D3  ↠  E3  ↠  F3  ↠  F3  ↠  G3  ↠  G3  ↠  A3  ↠  A3  ↠  B3  ↠  C4  ↠  C4  ↠  D4  ↠  D4  ↠  E4  ↠  F4  ↠  F4

Cheatsheet

The augmented undecime 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

Practice the A11 interval

Open the app and start your daily workout!

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Chords

Which chords use the augmented undecime interval?

Scales

Which scales use the augmented undecime interval?

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