Debuts with leading orchestras included the London Symphony Orchestra (New York, 1968), Berlin Philharmonic (1969), and New York Philharmonic (1970). Since then he has guest conducted virtually all of the world's leading orchestras.
In 1967, Barenboim married the brilliant cellist Jacqueline Du Pré, with whom he made several exceptional recital recordings. Unfortunately, this partnership ended when Du Pré contracted multiple sclerosis, which forced her to end her playing career in 1972. She died in 1987.
In 1989 he was named as Sir George Solti's successor as music director of the Chicago Symphony Orchestra
. In 1992, Barenboim became music director of the Berlin State Opera, then named chief conductor for life by its orchestra in 2002. In 1999, with Palestinian-American scholar Edward Said, Barenboim co-founded the West-Eastern Divan Orchestra, a summer youth orchestra designed to foster understanding and cooperation, and he established the Barenboim-Said Academy in Berlin. Devoted to the training of young Arab and Israeli musicians, the school opened in 2016. A recording of Beethoven's Symphony No. 9 by the West-Eastern Divan Orchestra appeared in 2013.
Barenboim has a rich recorded repertoire as a conductor, pianist, accompanist, and chamber music player. Interestingly, as a pianist, he tends to focus on Mozart
, and the early Romantics, while as a conductor he favors later Romantic music, particularly Brahms
and Bruckner (he has won a medal from the Bruckner Society of America).
Barenboim's recorded output continued to be abundant through his eighth decade, including not only standard repertory, but such novelties as On My New Piano (2016), an album devoted to the capabilities of an instrument custom-made for Barenboim by Belgian builder Chris Maene, and based on a piano owned by Liszt. As a conductor he continued to undertake lengthy, difficult scores by the likes of Bruckner and Mahler. His 2017 recording of Elgar's The Dream of Gerontius with the Staatskapelle Berlin was critically acclaimed.