Triads: The B Diminished Triad - Transforming the B Diminished Triad into the Bb Minor Triad

B-D-F is a diminished triad. Both 3rds are minor and the 5th is diminished.

To transform B-D-F into a B-flat minor triad, use the distributive property to transform the m3 B-D into the m3 B-flat-D-flat.

This transforms the D-F m3 between the 3rd and 5th of the diminished triad into the M3 D-flat-F.

The B-flat minor triad is spelled B-flat-D-flat-F.

Another way to spell a B-flat minor triad is to start with the pitch B-flat.

The m3 above B-flat is D-flat.

The M3 above D-flat is F.

The result is B-flat-D-flat-F.