Q: You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Category: CLASSICAL MUSICIANS 
Clue: In 1793, Haydn wrote he will be "one of Europe's finest composers, & I shall be proud to be called his teacher"
A:
ludwig van beethoven