Although there have been slight variations in the definition of a prodigy, the best definition is ‘a child who shows early signs of extraordinary talent or exceptional ability. A youngster who is too young to be as old and talented as he is.’
Most of the early composers started out as performers and were expected to compose compositions spontaneously on their instruments.
Wolfgang Mozart (1756-1791) at the age of four years old was able to play long musical compositions from memory and he composed short works at five years old. At seven years old, Mozart spent an hour at the organ in a Heidelberg church; ‘the dean overcome with emotion, ordered an inscription carved on the organ case attesting to the name and age of the boy and the date of the modern miracle he had witnessed.’ At eight years old Mozart played in London together with Johann Bach and Mozart was billed as a ‘Prodigy of Nature.’