That’s the name of the game ... Marco Blaauw plays on a quartertone double bell trumpet, a shell, brought from Madagascar, a slide trumpet, piccolo trumpet, quartertone flugelhorn even megaphone and flexible tube. Gijsbrecht Royé plays on a self-made bass-zither. To play on the four groups of bass grandpiano strings, he uses different kinds of sticks; two bows (normally used for double bass), metal strings, nails, brushes, knives, rat-tailed files and metal scouring pads.