In a quick, last-minute booking, the interminably eccentric Pixies frontman and lyrical surrealist Frank Black makes a rare solo appearance in Sonoma County this weekend. Continuing to wed wild ideas to vaguely surf- and ranchero-inspired rock, Black romances the unexpected on his latest, NonStopErotik. “Lake of Sin” is less a sequel to “Wave of Mutilation” than a churning ’70s glam-rock throwback; “Rabbits” sounds like an outtake from Beck’s Mutations; and “Dead Man’s Curve”—not a Jan and Dean cover—is reminiscent of his best solo work from Dog in the Sand. When Black was last here, he indulged the crowd with a number of Pixies songs; let’s hope for “Where Is My Mind?” instead of NonStopErotik’s “When I Go Down on You” (awkward!) when Black plays Thursday, July 8, at the Mystic Theatre. 21 Petaluma Blvd N., Petaluma. 8:30pm. $20. 707.765.2121.