Complex sentence: She acquired an aluminum cello made by the Pfretzner luthier family in 1929-aluminum instruments were also used by Jasha Heifetz and Efram Zimbalist.
Split into simpler sentences: She acquired an aluminum cello made by the Pfretzner luthier family in 1929. Aluminum instruments were also used by Jasha Heifetz and Efram Zimbalist.