Kees Olthuis (1940) was bassoonist with the Royal Concertgebouw Orchestra from 1970-2005. He is also a composer of works ranging from chamber music, such as the piano trio Voyage à l’horizon …Seul…, to theatrical works including the operas Francois Guyon, De Gans and De Naam van de Maan (to a libretto by Annie M.G. Schmidt). On the request of Bernard Haitink, Olthuis composed the symphonic poem Theseusfantasie, which was performed on various occasions by the Royal Concertgebouw Orchestra, as were his Jour de fête and Scherzo. He also wrote for the Residentie Orchestra, the Orkest van het Oosten and the Gelders Orkest. Olthuis (1940) composed the Capricho for 5 bassoon and string quintet in 1997 for his South American fellow-bassoonist Gustavo Núñez, in response to a commission by the Friends of the Royal Concertgebouw Orchestra. Olthuis writes: “Núñez’s virtuosity was a very special challenge, which I have fully exploited in this piece. The title Capricho is the Spanish variant of the capriccio, an ancient form allowing the composer to be whimsical and free”.