Sliding Ruler - Magic tool for the practice of PENTATONIC, DIATONIC and MODE scales/Pentatonic Sliding Ruler for Guitar: The essential tool for ALL

FOR GUITARIST OF ALL LEVELS - Give yourself the gift of having the “ALL IN ONE” tool to practice your scales! Instructions included. COLORFUL SHAPES

Customer reviews: Sliding Ruler - Magic tool for the

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Major & Minor Pentatonic scales on Guitar, all five positions in 12 keys around the circle of fifths, Including the Blues Scales. Updated and Improved

Major & Minor Pentatonic Scales Guitar: All Five Positions In 12 Keys

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Sliding Ruler - Magic tool for the practice of PENTATONIC DIATONIC

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Major & Minor Pentatonic scales on Guitar, all five positions in 12 keys around the circle of fifths, Including the Blues Scales. Updated and Improved

Major & Minor Pentatonic Scales Guitar: All Five Positions In 12 Keys