aRTET is a Belgian jazz quartet. They play François Delporte's compositions. Delporte plays acoustic and electric guitars, Tom Callens plays tenor saxophone, Ben Ramos plays double bass and Lionel Beuvens plays the drums. Their first album, Watts Up was released by De Werf. Kris Defoort guests on two tracks playing piano. Their sound is modern, with twin lead passages by guitar and saxophone on a platform of busy drumming.