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A founding member of the London Musicians Collective , Lytton worked extensively on the London free improvisation scene in the 1970s , and aided Paul Lovens in the foundation of the Aachen Musicians ' Cooperative in 1976 .
 Lytton, Paul Lovens
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lytton, Paul Lovens