Heptatonic Tetrachords | Sorting Algorithm Study

#studyvibes #chordtheory #satisyingchords An educational presentation of the Circle of fifths chord progression played through a variety of scales and modes. This video demonstrates a sorting algorithm to create four-note chords (tetrachords) in a strict cyclic sequence determined entirely by scale degree and pitch class. The progressions are modeled after the satisfying diatonic 1, 4, 7, 3, 6, 2, 5 or I, IV, VII, III, VI, II, V circle of fifths sequence. 0:00 Intro 00:22 Ionian 00:44 Dorian 01:05 Phrygian 01:26 Lydian 01:48 Mixolydian 02:09 Aeolian 02:30 Locrian 02:52 Circle of fifths minor mode 03:18 Harmonic major 03:40 Major Locrian 04:01 Lydian dominant 04:22 Lydian augmented 04:44 Melodic minor (ascending) 05:05 Harmonic minor 05:26 Half diminished / Aeolian ♭5 05:48 Lydian diminished / Lydian ♭3 06:09 Dorian ♯4 06:30 Double Harmonic minor 06:52 Aeolian #4 07:13 Lydian dominant ♯2 07:34 Double harmonic major 07:56 Phrygian dominant 08:17 Double Harmonic major ♭5 08:38 Enigmatic 09:00 Melodic minor ♭2 09:21 Harmonic minor ♭2 09:42 Locrian ♮6 10:04 Super Locrian / Locrian ♭4 10:25 Circle of fifths minor mode * There are wide variations for notating these chords. For consistency, but not simplicity, the root is determined by the scale degree. Source for the 7-note (heptatonic) scales: https://en.wikipedia.org/wiki/List_of_musical_scales_and_modes ------------ Created, Composed, and Produced by Shawn Michael © 2025 Ambient Esoterica ------------ Link, Like, Share, and Subscribe! INSTAGRAM ➤ https://www.instagram.com/ambientesoterica/ TWITTER ➤ https://twitter.com/ambientesoteric BANDCAMP ➤ https://ambientesoterica.bandcamp.com/ SPOTIFY ➤ https://open.spotify.com/artist/0gKfTep4B6dzu7fxv3Z7jf BLOG ➤ https://www.ambientesoterica.com/