The Piedmont blues reference article from the English Wikipedia on 24-Apr-2004
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Piedmont blues

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The Piedmont blues is a type of blues music characterized by a unique fingerpicking method on the guitar in which a regular, alternating-thumb bass pattern supports a melody using treble strings. The Piedmont blues typically refers to a greater area than Piedmont, which refers to the East Coast of the United States from about Richmond, Virginia to Atlanta, Georgia. Piedmont blues musicians comes from this area, as well as Maryland, Delaware, West Virginia, Pennsylvania and Florida.

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