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In May 1966 , he was given the opportunity of recording on sessions for Elvis Presley 's album How Great Thou Art '' when Floyd Cramer was running late .
 Elvis Presley, How Great Thou Art, Floyd Cramer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Elvis Presley, How Great Thou Art, Floyd Cramer