The Bermuda Triangle Chord – mDecks Music
Published: 2022-04-25
chord symbols
circle of fifths
scales of limited transposition
symmetry
Explore the theory and voicings behind the mysterious "Bermuda Triangle" chord: a symmetric bi-triadic hexatonic built from stacked augmented triads with a major7 extension.
This lesson uncovers how the Bermuda Triangle chord arises from overlapping augmented triads and how adding a major7 affects its directional ambiguity. Learn the scale and symmetry principles behind the chord, see piano voicings, and get practical guitar fingerings and an alternate "bermuda" tuning to capture the sound. Includes context on limited transposition, circle-of-fifths mapping, and examples of musical uses and substitutions.
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