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The Origin of the Circle of Fifths
The Origin of the Sequence 4,1,5,2,6,3,7
Why Some Notes are Named using Sharps or Flats
The Dominant Seventh Chord
How to Change the Key of a Song
The Musical Origin of the Seven-Day Week
The Role of the Sequence in Ancient Traditions
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Mesopotamian Musical System
Ancient Chinese Musical System
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Music of the Spheres for Children
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Complex Chords Part 1
Complex Chords Part 2
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