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It was written in 1994 as a part of his MPhil portfolio in Composition at Cambridge University and premiered at the Barbican Hall in London under Oliver Knussen .
 London, Oliver Knussen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 London, Oliver Knussen