If you survive Lollapalooza this weekend, there’s a whole other dose of 90s nostalgia to take in on Sunday night. Local four-piece Post Child, who deliver a massive blast of throwback alt-rock, play in the basement of the Double Door at 8 PM. Today’s 12 O’Clock Track is their new single, “Brain in Two,” which showcases their knack for radio-ready, 90s slacker-rock perfection. The catchy jam brims with slick guitar leads and bummed-out, hypermelodic hooks; the group tip their hats to hit-machine monsters Weezer. No band in town right now sounds anything like Post Child, and that’s part of what makes them so great. Check out “Brain in Two” below.