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He was also a founding member of the 1970 s disco-funk band Rhythm Heritage , and he also played as a session musician for artists including Koinonia , Steely Dan , The Four Tops , Johnny Rivers , Seals and Crofts , Al Jarreau , and Loggins & Messina .
 Rhythm Heritage, Koinonia, Steely Dan, The Four Tops, Johnny Rivers, Seals and Crofts, Al Jarreau, Loggins & Messina
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rhythm Heritage, Koinonia, Steely Dan, The Four Tops, Johnny Rivers, Seals and Crofts, Al Jarreau, Loggins & Messina