The ZAPP! string quartet has gained the reputation of being one of the most willful and swinging string quartets in The Netherlands. They effortlessly combine jazz, rock, free improvisation and world music in a swinging, grooving show. The quartet has worked with, among others, Vera van der Poel, Sfeq, Fay Claassen, The Nits, Ronald Douglas, Piet Noordijk, and Brad Meldau. The talented violinist Oene van Geel, who recently won the Andersen Jazz Award as well as last year's Dutch Jazz Competition, does most of the arrangements. In 'Chamber Grooves', he brings together ZAPP! (violinists Jasper le Clercq and Friedmar Hitzer, cellist Emile Visser) and two of his favorite musicians - clarinet player David Kweksilber and pianist Jozef Dumoulin. Kweksilber is a versatile interpreter, who alternates between solo recitals on clarinet in the Concertgebouw and expressive solos on baritone sax in the New Cool Collective Bigband. The Belgian pianist Dumoulin plays classical music as well as modern jazz, impro and rock.