Sinfonia of London is a session orchestra based in London, England, and conducted by John Wilson.The current orchestra is the third of three distinct ensembles of this name. The original Sinfonia of London was founded in 1955 by Gordon Walker, an eminent flautist of his time, specifically for the recording of film music. The orchestra came into being when there was a split in the future direction of the London Symphony Orchestra, many LSO players leaving to join the Sinfonia of London in order to undertake the more lucrative film soundtrack work. The orchestra appeared in the musical credits of many British and American films of the 1950s and '60s, including the 1958 soundtrack for the Alfred Hitchcock thriller Vertigo with Bernard Herrmann's score conducted by Muir Mathieson for Mercury Records and, in 1961, the soundtrack of the horror film Gorgo.
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