Lil Pump was born in 2000, and by 2017 he had established himself at the forefront of rap’s teenage avant-garde, delivering harsh flows over dark, noisy beats often produced and de-produced by fellow Miamian Smokepurpp. Where “Gucci Gang,” the slithering hit that introduced Lil Pump to the mainstream, rumbles over the sort of physical bassline that you can feel in your sternum, “D Rose” goes full blown-speakers, the rapper chanting his lyrics while the beat crumbles around him. And though those tracks invoke punk or hardcore, “Esskeetit” is lo-fi electro, Pump coining another catchphrase over wobbly synth.