78067
However , musicologist Roger Parker notes that " the extreme formalism of the musical language has been seen as serving to concentrate and define the various stages of the drama , above all channeling them into those key confrontations that mark its inexorable progress " .
 Roger Parker
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:
 Roger Parker