Complex sentence: Clapisson showed a precocious talent as a violinist, and as a boy toured the south of France giving violin concerts under the tutelage of Pierre-Louis Hus-Desforges.
Split into simpler sentences: Clapisson showed a precocious talent as a violinist. As a boy he toured the south of France giving violin concerts under the tutelage of Pierre-Louis Hus-Desforges.