Original: He was also chief conductor of the Houston Symphony from 1961 to 1967 , and was a guest conductor of many other orchestras including the BBC Symphony Orchestra , London Symphony Orchestra , the Philharmonia , the Berlin Philharmonic and the Vienna Philharmonic , making recordings with all these orchestras .
Simplified: He was conductor of other great orchestras including the New York Philharmonic and the Houston Symphony , and also conducted orchestras including the London Symphony Orchestra , the London Philharmonic Orchestra , the Berlin Philharmonic , and the Vienna Philharmonic .