Gliss Riffer takes several directions. Some tracks slant toward EDM-inspired pop music (“Learning to Relax,” “Mind on Fire”) with conventional-like vocals. That is, even with a Vocoder and pitch shifts, it’s relatively easy to hear where Dan Deacon’s going with the tune. And then there are ambitious instrumental pieces (“Take It to the Max,” “Steely Blues”) that demonstrate beauty beyond basic minimalism into fields so dramatic that they do nearly take one’s breath away as a quarter-hour ticks away. Deacon underpins songs with anxiety-ridden rhythms, life-affirming harmonies, and vocal freakouts that only an inspired madman would dare assemble.