Three years after Vol.4 :: Slaves of Fear, the L.A. trio’s ferocious entry into the world of heavy music, Health return with the second half of their Disco4 series. A whole lot went to hell in the world in the meantime, forcing the band to re-invent how they wrote music together. For Disco4 :: Part II they cut it fast and mean, recruiting both legends and nascent contenders of heavy music and its many peripheral genres.