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In 1956 he toured briefly with Max Roach after Richie Powell , the band 's pianist and younger brother of Bud Powell , died in a car crash .
 Max Roach, Richie Powell, Bud Powell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Max Roach, Richie Powell, Bud Powell