B Dorian Bebop — Mandolin

B Dorian Bebop carries 8 notes per octave (bebop family), drawn here across the Mandolin's GDAE courses with every root marked — melody is this instrument's first language, and these maps are its phrasebook.

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.

Pure fifths make scales symmetrical: the finger pattern that plays mandolin notes on one course pair plays them on every other pair, so one shape learned is twelve keys owned — the same geography a violin player bows, which is why fiddle tunes fall so naturally under these fingers.

Pick each note cleanly with alternating strokes before you ever tremolo it, and let the audio set the pitch in your ear as you go.