- All perfect intervals may be enlargedto form an augmented interval.
- All perfect intervals except the unison may be decreasedin size to form a diminished interval.
P4 dim 4 P5 dim 5 P8 dim 8- Intervals 1, 4, 5, 8 may not be major or minor. All intervals may be augmented or diminished (exception:
no diminished unison).
Use this diagram to reinforce memory of interval qualities.
Theory Trainer
Exercise 10bIdentify intervals when written on staff: All qualities.Exercise 18—Class Exercise
Identify the following intervals.
- Determine the interval number.
- Determine the major key signature of the lowernote. When notes descend, the second note will be the lower
note.
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MODULE 10
- Intervals 1, 4, 5, 8
- Intervals 2, 3, 6, 7
1 4 5 8 2 3 6 7P
A
dMmdPA
Decrease a
half stepIncrease a
half stepdmMA
Decrease a
half stepIncrease a
half stepDecrease a
half step