Halsey established herself as one of pop's premier young voices in the early ‘10s, when she posted confessional originals and cheeky covers online. Early singles like the spectral, searching “Ghost” and the generational rallying cry “New Americana” combined left-field pop explorations with forthright lyrics, attracting a passionate fanbase. Her cameo on The Chainsmokers' 2016 breakup chronicle “Closer” turned her into pop royalty; she's dug deeper into music's vast territory since, dueting with Fifth Harmony's Lauren Jauregui on the sumptuous synth-pop lament “Strangers” and pairing sunny soul with self-laceration on “Alone.”