Mariss Jansons conducts the Royal Concertgebouw Orchestra. Exactly 125 years after the opening concert, the RCO is giving its Anniversary Concert, featuring a world premiere: "Mysteriën" (Mysteries) by Louis Andriessen, the Netherlands' most famous living composer. Also on the programme is Richard Strauss's tone poem "Ein Heldenleben" (A Hero's Life), dedicated in 1898 to RCO, which celebrated its tenth anniversary that year, and to Willem Mengelberg, its chief conductor at the time. Founded in 1888, the Concertgebouworkest ranks among the world's best orchestras. It is named after its home place, the Concertgebouw (Concert Hall) in Amsterdam, which opened in April 1888. In 1988, Queen Beatrix of the Netherlands conferred the "Royal" title upon the orchestra.