Sizzy Rocket became the sneering face of 21st-century alt-rock thanks to her 2016 electro-pop-punk seducer, “Bestie”, an unapologetically profane paean to turning your BFF into one with benefits. It’s easy to hear her corrupting influence on the songs she’s penned for reality-show phenoms like Bea Miller (check the kiss-off anthem “motherlove”) and chloe mk (whose “To Be Young” extols the life-affirming qualities of listening to Nirvana when you’re depressed).