As his album title suggests, Push Button Objects makes “glitch-hop” by having his hip-hop blared over by competing boomboxes on the playground. His latest joint is divided between a variety show of who’s-who in indie rap, and abstract beat explorations tagged with noise bursts. Things pick up midway with “Air,” featuring beats that slam like a strait-jacketed uncle in the attic, and “Sleep,” which scratches an MC’s voice into that of an eight-headed jabberwocky. Ghetto Blaster finally sobers up at “Washington Ave,” a space-out with DJ Shadow-esque scope, before UFOs arrive to end the world. Werd!