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Chopin 's early works are in the style of the " brilliant " keyboard pieces of his era as exemplified by the works of Ignaz Moscheles , Friedrich Kalkbrenner , and others .
 Chopin, Ignaz Moscheles, Friedrich Kalkbrenner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Chopin, Ignaz Moscheles, Friedrich Kalkbrenner