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The Octave Mandolin Chord Bible: GDAE Standard Tuning 2,160 Chords (Fretted Friends) : Richards, Tobe A.: Amazon.co.uk: Books
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Mustang Octave Mandolin conversion (made to order) with color and tuning options (Color: Green, Tuning (low to high) for your application: GDAD unison (Irish bouzouki))
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