D Harmonic Minor on Guitarrón

D Harmonic Minor runs 7 notes to the octave. Below it is mapped onto this instrument's A–D–G–C–E–A fingerboard with every D marked, because what a player needs mid-number is not the pattern but where the root is when the harmony moves under it.

Dark and dramatic. The raised 7th pulls hard toward the tonic, and the wide step from the b6 up to it gives the scale an exotic, almost Middle-Eastern tension.

Heard in: Classical minor-key harmony, neoclassical metal (Yngwie Malmsteen), flamenco-tinged rock, klezmer, and Balkan melodies.

The bass takes almost no melodic line, and that is precisely why these matter: the notes between one root and the next come out of a scale, and an approach that lands wrong is the loudest wrong note in the ensemble.

Take it slowly against the playback until the geometry stops being geometry, then put it under a number in D minor and let the written line pick its own notes out of it.