A Dorian Bebop — Cavaquinho

A Dorian Bebop is 8 notes to the octave (bebop family), drawn here across the Cavaquinho's DGBD strings with every A marked, so home stays visible from anywhere in the pattern.

Dorian with a chromatic passing tone slipped between the b3 and the 4 — eight notes, so chord tones keep landing on the strong beats in a run of eighth notes. Cool, flowing, and swinging.

Heard in: Bebop and straight-ahead jazz lines over minor seventh chords — Charlie Parker, Dizzy Gillespie, and the Barry Harris approach.

Four strings tuned DGBD put a scale somewhere honest and a little cramped: two or three notes to a string, no spare string to hide on, and every open pair climbing rather than doubling back. These maps mark every root so the top voice never loses home mid-run.

Practise it as a fill, not a ladder: pick four of its notes, drop them into the rests of a batida cell, then slide the same four to the next position. That is how this instrument actually uses a scale — a top voice riding above the chop, not a run played alone.