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Music Theory for Computer Musicians by Michael Hewitt

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Major and Relative Minor Keys

The relationship between major and relative minor keys—first studied with the keys of C major and A minor—is an extremely close one. Both scales use the same notes, the difference being the placement of the tonic. To work out a relative minor key, count down three notes (or up six notes) from the tonic of the equivalent major key. Figure 15.6 shows the relative minor keys of the five major keys we just considered.

Figure 15.6. The keys of Bb, F, C, G, and D major and their relative minors.

Because the major and relative minor keys use the same set of notes, the key signatures for both scales ...

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