Dorian/Aeolian Gapped Scales and Hybrids

Link to Ionian, Mixolydian, Dorian and Aeolian: Samples and Examples of the 4 Main Musical Scales in Celtic, Anglo-American and English Folk Songs [[1]]

The Aeolian scale is the same as the Dorian scale except that the sixth note is flattened by a semitone. To convert a Dorian to an Aeolian key signature, add a flat to, or remove a sharp from, it. Likewise, to convert an Aeolian to a Dorian key signature, remove a flat from, or add a sharp to, it.