How did an expert test Mozart to make sure that he was really a child doing these things?

An expert tested Mozart's abilities by presenting him with complex musical challenges that went beyond typical child prodigy skills. For instance, he would ask him to improvise on the spot or to perform intricate compositions that required not only technical proficiency but also a deep understanding of Music Theory. Mozart's ability to effortlessly navigate these tasks, along with his perfect pitch and exceptional memory, convinced the expert of his extraordinary talent. These tests demonstrated that his musical genius was genuine and not merely a result of rote learning or mimicry.