Negative Qualities, the debut full-length from the wiry, post-hardcore Ontario quartet Single Mothers, never fails to live up to its pessimistic title.

Negative Qualities, the debut full-length from the wiry, post-hardcore Ontario quartet Single Mothers, never fails to live up to its pessimistic title.

Throughout singer/screamer Drew Thomson takes aim at everyone and everything within eyesight, be it the grammar-obsessed (“I don’t care about your punctuation!” he howls on “Marbles”), religion (“I need God about as much as She needs me”) and, oftentimes, himself. “I’m no quitter/ I just quit/ When the situation demands it,” he growls on the typically self-immolating “Crooks.”

Bandmates Evan Redsky, Mike Peterson and Brandon Jagersky match the frontman’s bile ounce for ounce, laying down a twisted backdrop of barbed guitars and clattering drums that can, at times, feel like navigating a massive pileup on the interstate.

Dirty Nil opens the show.