The Royal Military Band "Johan Willem Friso" (Dutch: Koninklijke Militaire Kapel "Johan Willem Friso), also informally called the Band of the Royal Netherlands Army or the Johan Willem Friso Military Band is a Dutch military unit in the Koninklijke Landmacht (Dutch Army) which is the seniormost of all the military bands in the Netherlands Armed Forces, as well as the oldest of the four professional bands currently in existence in the army. It provides musical support for ceremonial events of national importance involving the army, the government, and the Dutch royal house. The repertoire of the band ranges from a variety of different genres, including military marches and contemporary/classical arrangements of symphonic music.