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The original score and songs were composed by Salil Chowdhury , with lyrics by Vayalar , and songs featuring the voices of K. J. Yesudas , P. Leela , Manna Dey and Santha P. Nair .
 Salil Chowdhury, Vayalar, K. J. Yesudas, P. Leela, Manna Dey, Santha P. Nair
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Salil Chowdhury, Vayalar, K. J. Yesudas, P. Leela, Manna Dey, Santha P. Nair