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| | Intervals - The Method Behind the Music |
 | | Augmented intervals are when a major or perfect interval is made one half step larger, and the interval number does not change. |
 | | Augmented intervals are labeled with an "A," the abbreviation "Aug.," or a "+." For example, above, if the P5 from C to G were changed to a C to G#, it would become an augmented fifth, or +5. |
 | | Diminished intervals are labeled with a "d," the abbreviations "dim" or "deg," or a "°." For example, if the perfect fifth from C to G above were changed to a C to Gb, the interval would become a diminished fifth, or °5. |
| www.numbera.com /musictheory/theory/intervals.aspx (696 words) |
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