B Major — Octave Mandolin

B Major carries 7 notes per octave (common family), drawn here across the Octave Mandolin's GDAE courses with every root marked — melody is this instrument's first language, and these maps are its phrasebook.

Bright, resolved, and stable. The foundation of Western tonal music and the most common mode in pop, classical, folk, and jazz.

Heard in: Pop, classical, country, folk, gospel — the default major tonality of Western music.

Pure fifths make scales symmetrical: the finger pattern that plays octave mandolin notes on one course pair plays them on every other pair, so one shape learned is twelve keys owned.

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.