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Beginning in the early Rococo era , composers such as Joseph Haydn , Michael Haydn , Johann Christian Bach , Giovanni Battista Sammartini and Johann Stamitz included parts that exploited the bassoon for its unique color , rather than for its perfunctory ability to double the bass line .
 Rococo, Joseph Haydn, Michael Haydn, Johann Christian Bach, Giovanni Battista Sammartini, Johann Stamitz
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:
 Rococo, Joseph Haydn, Michael Haydn, Johann Christian Bach, Giovanni Battista Sammartini, Johann Stamitz