Below are diagrams of how intervals, and their inversions, relate to the keyboard.  No augmented or diminished 2nds, 3rds, 6ths, or 7ths are noted here, since intervals of that nature have enharmonic equivalents already displayed and it would be impossible to graphically indicate those in the diagrams.

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Note that these intervals (tritones) equally divide the octave.

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See and hear Intervals on the staff.

Back to "Intervals" text.