Complex sentence: Their family life in the Netherlands was short, as Kondrashin died in Amsterdam from a heart attack in early 1981, on the same day he conducted Mahler's First Symphony with the North German Radio Symphony Orchestra.
Split into simpler sentences: Their family life in the Netherlands was short, as Kondrashin died in Amsterdam from a heart attack in early 1981. On the same day he conducted Mahler's First Symphony with the North German Radio Symphony Orchestra.