130698
His lifelong interest in 19th century Italian opera , which began with listening to the Metropolitan Opera broadcasts in his youth , most recently led to the publication of a major book on the subject , Divas and Scholars : Performing Italian Opera , which won the Otto Kinkeldey Award of the American Musicological Society as the best book on music of 2006 .
 Metropolitan Opera, Opera
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Metropolitan Opera, Opera