Question: The Toccata and Fugue in D minor, BWV 538, is an organ piece by Johann Sebastian Bach, like the better-known BWV 565, the Toccata and Fugue in D minor, BWV 565, is a piece of organ music written, according to its oldest extant sources, by who?
Sentence (from "Toccata and Fugue in D minor, BWV 565"): The piece opens with a toccata section, followed by a fugue that ends in a coda.
Relevant evidence: No