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. The Dorian and Aeolian scales are thus quite similar to each other, and there are quite a few Dorian/Aeolian gapped scales and quite a few Dorian/Aeolian hybrids. Here are some examples.

As I Roamed Out (GB/6a/5)

Link: https://www.vwml.org/search?q=GB/6a/5&is=1#

Tune Analysis: D Aeolian key signature but some of the Bbs are naturalised to produce a Dorian/Aeolian hybrid. Heptatonic, Plagal.