Eschewing the usual criteria of chart success or acknowledged influence, the Copendium -- a collection of album reviews and themed track samplers -- takes energy, originality and heaviness as its bearings. The result is a feast of obscure and neglected masterworks that together form a surprising but entirely credible new tradition. Krautrock, motorik and post-punk, stoner and doom metal, occasionally even jazz, spoken word and hair metal: they are...