Music Theory/Fundamentals of Common Practice Music/Tonality

Key Intervals Appearing in a Key Modes Modes means 7 scales in a major scale.Its based on the Major scale chord structure which is called Tetra Chord Theory.The theory is :Major-Minor-Minor-Major Major-Minor-Diminished-Major:.Modes goes with the notes of the scale.The seven modes are - Ionian Dorian Phrygian Lydian Mixolydian Aeolian Locrian To be continued .... Diatonicism Tonality Defined Chords/Chord Construction Diatonic Triads/Seventh Chords Primary and Secondary Diatonic Triads Chord Progressions (Connection)