A convergence of musical and cultural influences, this unstoppable female-fronted group has cultivated a sound as inimitable as its members. Owing their foundations to traditional afrobeat (and named after a Fela Kuti song), the band has gone on to embrace no wave, dance punk, Italo Disco, funk, electronica and House music, creating four-on-the-floor musical convergences between the genres. Underground System is increasingly hard to categorize, but global dance music is one way to sum it up — and Valley audiences who saw them at last year’s Barbès in the Woods or at Millpond.Live will know exactly what we mean by that.