Moscow's Xvostya offers a beer 'n' vodka-soaked polka cover of NIN's "Survivalism," Trent's pricy wall-of-synthesizers replaced by accordion, bottle, silverware, comb, guitar, handclaps, and (pretty literally) the kitchen sink. Maybe it's the dawn of MacGyver rock? [videoembed size="full_width" alignment="center"][/videoembed] Conversely, turning a "racket" into musical notation, the 11-strong Zeitkratzer "covered" Lou Reed's 1975 Metal Machine Music a few years back, ...