Delta 5’s spiky feminist anthems loom over post-punk and riot grrrl. This vital set collects the politically defiant Brits’ key singles, including 1979’s “Mind Your Own Business,” a mutant disco track shot through with hypnotically chanted slogans and guitars as pleasant as fingernails on chalkboard, and “Try,” nervy avant-funk showing off their love of sinewy basslines. You’ll also encounter a clutch of blistering live cuts: “Make Up,” recorded with radio host John Peel, is a blast of art-school R&B that slashes like razor blades.