Sister (407 Central NW) will be the scene of a droning clamor on Monday, May 11, when the venue welcomes Earth and True Widow. Earth is the progeny of Olympia, Wa., native Dylan Carlson. For over 25 years, the dude has been busting eardrums, discomfiting the square set and worshipping Satan—or some semblance of the goat-god—while producing music that is as perplexing as it is compelling. Dense, dark and full of distorted guitar gymnastics, Earth has seen its share of members ascend and fall. Throughout the fracas, the band has managed to maintain a precise take on a dark side of drone-inflected Americana that includes influences as diverse as Roy Buchanan and Merle Haggard.