Minneapolis’s Poliça, a psychedelic R&B offshoot of Gayngs, began when singer Channy Leanagh and producer Ryan Olson started collaborating together in the summer of 2011. Things clicked, and within a month, the two already had enough material to begin recording. So they recruited bassist Chris Bierdan and drummers Drew Christopherson and Ben Ivascu, and cut Give You the Ghost, which came out early last year. How well was the album received? Well, Bon Iver’s Justin Vernon said, “They’re the best band I’ve ever heard.” Their follow-up, also well-received, Shulamith (stream it below), arrived a few weeks ago. Consequence of Sound says Poliça (above, doing “Dark Star”) “push beyond their previous record through the maturity of their sexy, electronic R&B sounds united with darker lyrics and political connotations.” See them, with Marijuana Deathsquads opening, tomorrow night at Webster Hall.