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With percussionist Aaron Gold , guitarist Theo Katzman , and bassist Christian Carpenter , all fellow undergraduates studying in the music department at University of Michigan , Duncan developed experimental tracks using Irish bagpipes as the lead instrument and a laptop to mix bass music and techno drum beats .
 Michigan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Michigan