A key signature with three flats applies to which pair of related keys?

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Multiple Choice

A key signature with three flats applies to which pair of related keys?

Three flats in a key signature are B-flat, E-flat, and A-flat. This exact signature belongs to E-flat major, and the same signature also represents its relative minor, C minor. That relationship—major and its relative minor sharing the same key signature—explains why these two keys form a matched pair. The other options would require different signatures (three sharps, one sharp, or two sharps), so they don’t align with three flats.

Three flats in a key signature are B-flat, E-flat, and A-flat. This exact signature belongs to E-flat major, and the same signature also represents its relative minor, C minor. That relationship—major and its relative minor sharing the same key signature—explains why these two keys form a matched pair. The other options would require different signatures (three sharps, one sharp, or two sharps), so they don’t align with three flats.

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