339798
Many songs , such as " Motherless Children " and " Wabash Cannonball " found here , were traditional folk songs that were copyrighted by A. P. The tracks have all been digitally remastered and include liner notes by country music historian Charles K. Wolfe .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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