“UK post-punk trio Shopping's spiny "Why Wait"—off their forthcoming Why Choose—is, like quite a few songs in the last several years, an attempt to grapple with the much-too-muchness of modern life. "Why wait, when it's all at my fingertips?" Rachel Aggs wonders, later adding "why pay for something they're giving away?" But the flat, faintly numbed affect in which Aggs delivers these lines makes "W”