One defining piece of reggae music is social criticism, a major theme embedded within “Rise Up”, the newest single from Boston-based rocksteady's Java Jukebox. “Rise Up” is an exercise in classic dub form: a bass and drum driven arrangement, arpeggiated horn lines, tape delayed phrases (Rise Up! up...up...up...up), a dancehall breakdown, and of course, social criticism. Singer Samuel Walukouw, rallying in the cool rasp of a Marley, uses “Rise Up” as a call to action, specifically against police brutality; “Put your fist up high in the air, say you’re going to fight this brutality!” The heartfelt commentary and chops behind it all make the music of Java Jukebox truly authentic and unique in the dub-sparse city of Boston. Stream “Rise Up” below, and check out Java Jukebox at Brighton Music Hall on February 2nd. -Charley Ruddell