An illuminating lesson in the notion of TONALITY and how different tonalities are used to creative various moods…
Let’s learn what tonality really means by playing a familiar Irish Jig in the same key center D but in three different tonalities: Mixolydian, D Dorian, and D Major…
Irish Jig, Mixolydian Tonality
The key signature for D Mixolydian is one sharp (F#)…

Your ears should hear and feel the major quality created by the note F# (Mi)and the harmonic tension created by the note C (Te).
Irish Jig, Dorian Tonality
The key signature for D Dorian is no sharps or flats…

Your ears should hear and feel the minor quality created by the note F (Me). and the harmonic tension created by the note C (Te) in the C chord.
Irish Jig in Major Tonality
The key signature for D Major is two sharps (F# & C#)…

Your ears should hear and feel the major quality created by the note F# (Mi) and the harmonic tension created by the leading tone C# (Ti) in the A7 chord.
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