The Prince of Denmark's March was written around 1700
by the English baroque composer Jeremiah Clarke, who
was the organist for the St. Paul's cathedral. This
march is popular as wedding music and was used in the
royal wedding of Prince Charles and Lady Diana
Spencer.
It was originally attributed to Henry Purcell, but is
now known to be the work of Clarke.
The work is also known as a "Trumpet voluntary". This
because organists who played such pieces used the
trumpet stop.