Einstürzende Neubauten is a German experimental music group, formed in West Berlin in 1980. The band currently comprises founding members Blixa Bargeld and N.U. Unruh, long-time contributor Alexander Hacke, plus Jochen Arbeit, and Rudolph Moser, who both joined the line-up in 1997. One of their trademarks is the use of custom-built instruments, predominantly made out of scrap metal and building tools, and noises, in addition to standard musical instruments.