Complex sentence: Born in the city of Babol, capital of Babol County, Mazandaran Province, Iran, Mortazavi studied music in Tehran, and was trained in improvisation, orchestration, arrangement, quarter tone technique, and dastgah by various well-known violinists in Iran.
Split into simpler sentences: Born in the city of Babol, capital of Babol County, Mazandaran Province, Iran, Mortazavi studied music in Tehran. He was trained in improvisation, orchestration, arrangement, quarter tone technique, and dastgah by various well-known violinists in Iran.