Instrumental funk eight-piece Polyrhythmics plays a fusion of Afrobeat-influenced tightness tonight at Humbrews at 9 p.m. ($15). Paired perfectly with this fusion machine is Ghost Note, an offshoot of Brooklyn-based jazz and jam master act Snarky Puppy and led by the latter's beat makers, drummer Sput Searight and percussionist Nate Werth.