Question: Who was conductor of the City of Birmingham Orchestra at one point as well as a conductor over Colin Sauer during his time at the BBC Symphony Orchestra?
Sentence (from "Adrian Boult"): Brought up in a prosperous mercantile family, he followed musical studies in England and at Leipzig, Germany, with early conducting work in London for the Royal Opera House and Sergei Diaghilev's ballet company.
Relevant evidence: No