Complex sentence: Rodolphe Kreutzer (15 November 1766--6 January 1831) was a French violinist, teacher, conductor, and composer of forty French operas, including "La mort d'Abel" (1810).
Split into simpler sentences: Rodolphe Kreutzer (15 November 1766--6 January 1831) was a French violinist, teacher, conductor, and composer of forty French operas. Kreutzer also composed a number of operas, including "La mort d'Abel" (1810).