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Offering assignable knobs , a " log controller " ( a mix-up of a modulation wheel and ribbon controller assembled like a " sausage " ) and many other control sources , it invited players to tweak and shape the sound both easily and quickly .
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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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