From Los AngelesRecommended if you like Slayyyter, Charli xcx, UnderscoresUp next Halo out now. UK and Ireland tour starts in DecemberRight now popstar breakthrough and burnout are a hair’s breadth from one another. Enter Tiffany Day, a Wichita-raised artist who first went viral in 2017 when a video of her singing Hallelujah on a school trip blew up online. She spent the subsequent years unsuccessfully chipping away at building on that virality, cycling through acoustic guitar covers and bedroom R&B. Only by channeling her frustrations into this year’s anxiety-ridden sugar rush Halo did Day finally regain her early momentum.Day’s music stands out for its robust balance of giddy hyperpop and frank vulnerability: think of it as the tears-on-the-dancefloor dynamic for the infinite scroll era. Halo opens with Everything I’ve Ever Wanted, a plainspoken ode to the coveted come-up and the dreaded fall-off, in which Day panics about success. “When something good comes crashing into me, it’s like I can’t breathe,” she frets through a smear of Auto-Tune.Halo is high energy but came from a place of exhaustion, with Day concluding that this album would be her last. Past caring about others’ opinions, she injected it with a crushing electroclash chaos that illuminates her insecurities in a bright neon hue. On songs like DoIt4me and Pretty4u she alternates between freaking out in front of the mirror and hiding in the corner at parties, exposing herself further from behind walls of yo-yo synths and hacksaw bass lines. It’s enough to make youthful insecurity feel manageable, or to make you thank god those days are a thing of the past. David RenshawThis week’s best new tracksPitying … Coco and Clair Clair. Photograph: Coco & Clair ClairCoco and Clair Clair – One OneIf you loved squirming under Smerz’s withering gaze last year, let your skin prickle to this Atlanta, Georgia duo’s addictive, pitying dismissal of an ungrateful ex, as menace encroaches on their minimalist, stumbling percussion. LSHelen – Dead Shark IIEleven years after Helen’s debut, Liz Harris (AKA Grouper) unexpectedly reforms her dream-pop band. Full of silt, stardust and rumble, Dead Shark II is as good as the genre gets. LSLancer – 2Late