From 1981 to 1985 he was principal guest conductor of the Los Angeles Philharmonic Orchestra, and from 1988 to 1995 he was principal conductor of the London Symphony Orchestra, becoming principal guest conductor thereafter.
He was principal guest conductor of the Los Angeles Philharmonic Orchestra. This was from 1981 to 1985. He was principal conductor of the London Symphony Orchestra. This was from 1988 to 1995. Principal conductor of the London Symphony Orchestra was becoming principal guest conductor thereafter.