Matmos , the electronic duo whose catalog includes albums made of sampled washing machines and medical procedures, have unveiled their latest gambit: a new album composed entirely of metal object sounds. Metallic Life Review combines the sounds of pots and pans, creaking cemetery gates, metal tape-deck reels, aluminum cans, and many other metals recorded throughout the duo’s history and back to Drew Daniel and M.C. Schmidt’s childhoods. A single, “ Changing States ,” is dedicated to the late