Complex sentence: In addition to her performing career, Gornostaeva was a professor at the Moscow Tchaikovsky Conservatory; she held masterclasses in Italy, Germany, France, Switzerland, the United Kingdom and the USA.
Split into simpler sentences: In addition to her performing career, Gornostaeva was a professor at the Moscow Tchaikovsky Conservatory. She gave masterclasses in Italy, Germany, France, Switzerland, the United Kingdom and the USA.