Mercurial psych-folk luminaries Six Organs of Admittance are headlining tonight’s show at the Crocodile, but it would be a grave error in judgment to miss Master Musicians of Bukkake. One of three candidates for The Stranger’s Genius Award in music, these local sonic outliers respectfully filter arcane musical elements from various global cultures into mystical, expansive compositions that are alternately ominous and inspirational. Every MMOB live show is different, but they’re all grand spectacles that proceed with a ritualistic grandeur. One kind of feels sorry for whoever follows them onstage.