Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: He composed the scores for the ballets Dybbuk and Facsimile, while his controversial Mass was composed specifically for the opening of the Kennedy Center for the Performing Arts. Initially studying under Walter Piston and Fritz Reiner, he was soon mentored by Serge Koussevitsky. Making a spectacular debut as conductor with the New York Philharmonic as a last-minute substitute for Bruno Walter, he went on to success both as a conductor and composer of musicals like Candide and Fancy Free. FTP, who was this composer of West Side Story
A:
Fine Arts