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At the same time he launched his career as a soloist and chamber musician , playing with Nicholas Angelich , Jérôme Ducros , Frank Braley , Hélène Grimaud , Gérard Caussé , as well as with his brother Gautier , a cellist .
 Nicholas Angelich, Hélène Grimaud, Gérard Caussé, Gautier
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nicholas Angelich, Hélène Grimaud, Gérard Caussé, Gautier