Mercury is a concert march composed in a typically British idiom. In 1990, Jan Van der Roost wrote this piece on the occasion of the 15-year anniversary of his own band: Brass Band Midden Brabant. Like many British marches, the main theme is written in a minor key. Powerful and virtuoso themes characterize the first part of this march, while the trio melody is much more melodical, offering the tenor register to display its lyrical skills. Follows a dynamic passage for trombones and trumpets/cornets, leading to a "grandioso" version of the main trio melody and thus concluding this march in a magnificent way.