There is fairly good evidence that Mozart wrote his very first piece at the age of 5 (before you probably started school). What sort of piece was it?

Wolfgang Amadeus Mozart was a talented child and began composing when he was just 5 years old! Mozart went on to write more than 600 works - symphonies, concertos and operas - which are still recognized today as some of the greatest pieces of music ever composed. Sadly, Mozart died when he was just 35 years old.