Phrases like “hard to pin down” and “defies easy categorization” get thrown around way too much, but PC Worship truly has a chameleonic presence. Northern Spy, which last week put out the band’s new album Buried Wish, describes it as a “dedication to categorical ambiguity.” Their free-flowing ways consist of improvisational live sets, an ever-rotating cast of musicians, homemade instruments (like frontman Justin Frye’s “Shitar”), and a hazy sort of eclecticism that brings tape loops, sludge rock, and free jazz together with so-called “Eastern” rhythms and avant-Americana.