The cause of death was complications of pneumonia, according to a statement by The Castleton Festival, an annual festival Maazel founded with his wife in 2009, reported Ace Showbiz.
Maazel had been rehearsing and preparing for the festival at the time of his death. He founded the festival to mentor young musicians and to bring new energy to classical music.
Maazel's "leadership and imaginative programming and performances brought inspiration and joy to Cleveland Orchestra audiences around the world," the orchestra wrote in its website, "his importance in our history will be forever remembered."
Maazel was born in Paris on March 6, 1930, to American parents who studied there. He was a dazzling prodigy. At 5, he took his first violin lesson. At 7, he began studying conducting under Russian maestro Vladimir Bakaleinikoff. At 12, he got his first steady conducting job.
At 16, the young conductor entered the University of Pittsburgh to study language, mathematics and philosophy and played the violin with the Pittsburgh Symphony to help pay his tuition. He was fluent in six languages.