Original: He served concurrently as musical advisor of the Cleveland Orchestra from 1970 to 1972, chief conductor of the BBC Symphony Orchestra from 1971 to 1975, and music director of the New York Philharmonic from 1971 to 1977.
Simplified: He was the chief conductor of the BBC Symphony Orchestra from 1971-1975, the New York Philharmonic from 1971-1977 and now he is Conductor Emeritus of the Chicago Symphony Orchestra.