Given the task definition and input, reply with output. Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.

original question: How many artists are featured in the recording contributed by [London Symphony Orchestra]?
answer: 6
answer type: Featured artist.
auxiliary information: The London Symphony Orchestra, founded in 1904, is the oldest of London's symphony orchestras. It was set up by a group of players who left Henry Wood's Queen's Hall Orchestra because of a new rule requiring players to give the orchestra their exclusive services. The LSO itself later introduced a similar rule for its members. From the outset the LSO was organised on co-operative lines, with all players sharing the profits at the end of each season. This practice continued for the orchestra's first four decades. The LSO underwent periods of eclipse in the 1930s and 1950s when it was regarded as inferior in quality to new London orchestras, to which it lost players and bookings: the BBC Symphony Orchestra and the London Philharmonic in the 1930s and the Philharmonia and Royal Philharmonic after the Second World War. The profit-sharing principle was abandoned in the post-war era as a condition of receiving public subsidy for the first time. In the 1950s the orchestra debated whether to concentrate on film work at the expense of symphony concerts; many senior players left when the majority of players rejected the idea.
How many artists recorded the contribution by [London Symphony Orchestra]?