Ionian, Mixolydian, Dorian and Aeolian: Samples and Examples of the 4 Main Musical Scales in Celtic, Anglo-American and English Folk Songs
For discussion and explanation of the 4 main musical scales in Celtic, Anglo-American and English folk songs follow these two links:
Scales and Musical Modes in Celtic, Anglo-American and English Folk Songs
and
For samples and examples of the 4 main musical scales, and of the most common gapped and hybrid scales, follow these links:
Ionian/Mixolydian Gapped Scales and Hybrids
Ionian/Lydian Gapped Scales and Hybrids
Mixolydian/Dorian Gapped Scales and Hybrids