2007 release ** "The sounds on Drilling derive mostly from modified toy synthesizers, hooked to a variety of electronic devices such as a film projector or a lamination machine. With these, he constructs pieces that move freely between the worlds of sound art and improvised music. Montgomery works along paths determined by the instruments and appliances he uses, but the overall structure is open. Deliberate variations in density and texture do occur as do climaxes, but the pieces often take unexpected turns, and tend to end suddenly.  Montgomery chooses sounds that he enjoys. These are often reminiscent of machinery, without clearly defined pitch and proceeding with slow-grinding, slightly irregular rhythms. They are shot through with whooshes, roars, and cracklings that one would associate with the early days of electronic music. Efficaciously layering the various components, Montomery achieves considerable depth in the sound image. Most of the album is linked to Montgomery's experiences of Berlin. He composed the title track during a stay in the city when the Wall came down. The final piece Don't Bring Those Things came out of a trouble-riddled border crossing from West to East while the Wall was still standing. While he was crossing to go and do a performance, the border guards prevented him from taking his modified keyboard across. He borrowed one from East-Berlin friends for the concert, in which he reiterated the phrase that his interrogators had thrown at him. In a gloriously raucous way this is a meditative piece—and surprisingly melodic in between screeches, electronic stutterings, and siren-like wailings.2