Music theory workbench

Build a major or natural minor scale and inspect a semitone interval from its root.

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Using the music theory workbench

A major scale follows semitone offsets 0, 2, 4, 5, 7, 9 and 11. Natural minor uses 0, 2, 3, 5, 7, 8 and 10. The interval control transposes the root by your chosen number of semitones.

A worked example

C major contains the pitch classes C, D, E, F, G, A and B. Seven semitones above C is G.

Next: Circle of fifths

Before you use the result

Pitch-class labels combine sharps and flats. This is not a notation editor, and enharmonic labels may differ from the spelling needed in a written key.

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ToolOctopus. “Music theory workbench.” Updated 2026-09-19. https://tooloctopus.com/music-theory-workbench.

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