D Whole Half Diminished — Bass (5-String)

The D Whole Half Diminished scale runs 8 notes per octave in the symmetric family. Below it sits on the Bass (5-String)'s BEADG strings with every root marked, because a bassist reads a scale map as a set of targets around the root, not a row of dots.

Unstable and eerie — alternating whole and half steps, with the b3, b5, and 6 spelling a diminished seventh chord in every direction. Ominous, symmetrical, and unresolved.

Heard in: Diminished seventh chords in classical and jazz, horror and suspense scores, Bartok and Stravinsky, and neoclassical metal.

In fourths tuning every pattern is movable: learn the shape once, one finger per fret, and it works from any root on the BEADG neck. With the low B in the tuning, the same fingering covers more range before your hand ever shifts.

Walk it slowly against the audio, land each root on a downbeat, then take it to the progressions in D and let the scale turn into lines.