It's time to get weird and you don't get much weirder than Captain Beefheart. His amalgamation of garage rock, free-jazz, delta blues and avant garde insanity was challenging and strange in the 1960's and its power hasn't diluted one bit all these decades later. "Dachau Blues" is from his widely recognized masterpiece Mask Trout Replica and the future sound of PiL, Gang of Four, Sonic Youth and the like can be heard in every note. Add lyrics about an infamous Nazi concentration camp and you have capital "H" heavy. It's an important touchstone in our ongoing conversation