C# Half Whole Diminished Scale on Jacob Collier 5-String

Play the C# Half Whole Diminished scale on Jacob Collier 5-String with fretboard diagrams that map the pattern across the neck. The Half Whole Diminished scale has 8 notes per octave and belongs to the symmetric family.

2 of Jacob Collier 5-String's 3 open strings belong to C# Half Whole Diminished: D (the flat 2nd), E (the flat 3rd). The A string falls outside it, and C# is not available open. Open, the strings cover D2 to D4.

Tense, symmetrical, and slightly sinister — alternating half and whole steps pack in the b9, #9, #11, and 13, so it sounds like a dominant chord stretched to breaking point. Edgy, jazzy, and restless.

Heard in: Jazz lines over 13b9 dominant chords, fusion, film-noir and horror scoring — the sound of a V chord that refuses to settle.

Jacob Collier 5-String is tuned D–A–E–A–D, with 15 frets to work with. This 5-string is tuned D-A-E-A-D (low to high), a symmetric tuning that mirrors around the middle E string — standard guitar shapes do NOT transfer, so every voicing here is built for this tuning.

Each position shows the scale notes and their intervals from the root so you can connect the shape to its sound, hear it with audio playback, and practice it in any register. Movable patterns let you transpose the same fingering to other keys once it is learned.

Once a position is under your fingers, link the C# Half Whole Diminished scale to the chords it harmonizes and to progressions in the key of C# to start improvising and writing with it. Working a scale alongside its chords is the fastest way to make it stick and to hear how it colors a progression.