That mix of high-life couture and lowlife shenanigans continues on “Y2K!,” the debut album from Ice Spice, on which the Uptown upstart bangs out 10 songs in 20 minutes, shrugging off lyrics hip-shaking and check-signing, hooking up and stepping out, in pint-size blasts of twitchy exuberance. Perhaps with Coco in mind, the songs make their points without over-accessorizing: a couple of verses, a couple of choruses and nary a bridge in sight.