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His quest for learning all forms of music expanded his horizon towards Pakistani classical music , Afghani classical music , Punjabi classical music , Sufiana and multiple semi classical forms of indian sub-genres from the respective exponents of each systems during his many years of USA tenure .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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