Scheidt is a composer who has created software that responds to the input of acoustic instruments. On this album the instruments are percussion, clarinet, trombone, and voice. Obeying the Laws of Physics Trevor Tureski’s percussion into shimmering webs of metallic sound. Scheidt uses four timbres, some of which sound like chimes or synthesizer rather than drums, almost making Tureski the composer and Scheidt the musician — Tureski is deciding the rhythms and Scheidt the nuances of the sound. At first some of the pieces bothered me; I focused on the computer modifications, seeing them as sometimes annoying add-ons. After a couple listens the acoustic origin and the electronic mutations seemed more integrated, sometimes creating evocative landscapes, sometimes electroacoustic duets, as in Norm ’n George, which uses the ever-fine tromboning of George Lewis. Still, the most effective moments are those where the sound of the original instrument is audible but modified, rather than those where all one hears are the generic computer-generated sounds that creep in from time to time.