There is no clearly named "organ concerto" (i.e., for organ and orchestral ensemble) by Bach, but several cantata movements contain extensive organ solo parts.
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She gave the first British performance of Poulenc's Organ Concerto in Chichester Cathedral in 1943.
He trained in Sydney in English and French schools under Kenneth Long and Norman Johnston played Poulenc's Organ Concerto in the Sydney Town Hall on national TV.