Ken Ueno & Reference Sine  last thoughts before the global acedia Nonessential DL With its distinctive combination of amplification and distortion, the electric megaphone has an aesthetic of protest. For UC Berkeley music professor and composer Ken Ueno, the bullhorn has become an extension of his extended vocal technique, rooted in circular breathing and throat-singing techniques. On last thoughts before the global acedia, he joins forces with Flagstaff, Arizona trio Reference Sine to develop two distinct vibes for their collective improvisatory palette. The first, “On Earth”, is a cathartic clamour of glossolalic grunts, clattering percussion and frazzled electronics. “Briefly Gorgeous”, meanwhile, explores the opposite end of the dynamic range, inching its well timed scritches and judicious slurps along a backdrop of open and accommodating silence.