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Interval Inversions
An interval is said to be inverted when one of the notes is moved up
or down an octave. In the example below, the minor third (b-d) becomes
a Major sixth when the b is moved up an octave.

Any interval can be inverted and the following table is always true for
interval inversions:
| Original Interval |
Interval after Inversion |
| 1 (unison) |
8 (0ctave) |
| 2nd |
7th |
| 3rd |
6th |
| 4th |
5th |
| 5th |
4th |
| 6th |
3rd |
| 7th |
2nd |
This describes what happens to the interval quantity.
The next table shows the interval quality.
| Original Quality |
Becomes after inversion |
| Perfect |
Perfect |
| Major |
Minor |
| Minor |
Major |
| Augmented |
Diminished |
| Dimished |
Augmented |
For more examples, go to the next page.
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