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For example , the song " Ai n't Nobody 's Business " as performed by Freddie King at least , uses a I–III–IV–iv progression in each of the first four bars .
 Freddie King
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Freddie King