The debut EP from Mexican singer Girl Ultra pulses to the twitchy electronic beats of 21st-century R&B, but it also takes influence from the quiet storm ballads that ruled the '80s—like the diaphanous slow jams "Fuego" and "Get You", which threaten to dissolve into an entrancing ambient haze of wordless coos and murmuring synths. While much of Boy shimmers more than it bangs, the lively rhythms of "Timeout" and "Mala" add an irresistible hint of bubbly pop to Girl Ultra's woozy brand of downtempo soul.