Xiu Xiu is the long-running project of the reliable provocateur Jamie Stewart. Reliable because across a voluble outpouring of releases since the early 2000s, the subject matter of Stewart’s songwriting has remained static: personal tragedy, graphic sex, and suicidal ideation. His music and singing are fittingly fraught — harsh feedback and clamorous percussion belie his sniveling whimpers and squeals. On Xiu Xiu’s most recent album, Angel Guts: Red Classroom, Stewart’s latent industrial influences come to the fore, and he proves to be an adept user of abrasive synth blasts and plodding rhythms. It’s an assaultive album, but where Stewart’s earlier efforts to abuse listeners could elicit mere annoyance, Angel Guts: Red Classroom is enthralling enough to make them submit. Chicago-based songwriter Haley Fohr (aka Circuit Des Yeux) will open for Xiu Xiu this weekend at Bottom of the Hill (1233 17th St., San Francisco). Last year’s remarkable album, Overdue, featured Fohr’s husky and expressive vocals with cyclical string arrangements and artful studio mistreatment.