Bach is arguably the greatest of all composers, and he wrote some of his greatest music for the pipe organ. No piece of music is more instantly recognisable than his Toccata and Fugue in D minor. But did Bach actually write it? The irrepressible English organist Daniel Moult travels to Germany and explores the great Toccata and its extraordinary history. Regardless of who wrote it, it will remain one of the most popular pieces of music ever written.

The 100-minute documentary is followed by more than two hours of filmed performances and presentations.