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Learning Ukulele with Curt
Tetrachords: Lydian (1 2 3 #4)
The Lydian tetrachord is the 1 2 3 #4 of a Lydian, Lydian Dominant, or Whole Tone scale.
Author(s): Curt Sheller Publisher: Curt Sheller Publications Code: UL115b
Main Category: Chords Main Instrument: Ukulele
Categories: Chords, Scales, Augmented, Dominant
2026-08-23
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Number of Pages: 20
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The Lydian tetrachord is the 1 2 3 #4 of a Lydian, Lydian Dominant, or Whole Tone scale.
Traditionally, a tetrachord is a series of four tones filling in the interval of a perfect fourth. In modern usage a tetrachord is any four-note segment of a scale or tone row including the augmented fourth (+4). The term tetrachord derives from ancient Greek music theory, it literally means four strings.
Chords with a major third in them can use a tetrachord with a major third in them.
C, C7, Cmaj7, C+7
Chords with a minor third in them can use a tetrachord with a minor third in them: Examples: Cm, Cm7, Cmin-maj7, Cm6
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