Overtly influenced by some notable urban hits of the past, 2018’s “Darte” and its corresponding Sexflix EP brought Puerto Rican singer Alex Rose promptly to the fore of música urbana’s R&B wave. For LOST, he’s clearly lost none of that libidinous mojo in the interim. His suave vocals ride atop relaxed reggaetón rhythms on “Encendía” and the lustful single “Ontas?” Apparently willing to share, he links with Carlee, Lyanno, and Omy de Oro for the alluring boudoir trap of “Disimulas” and commiserates over a dicey ex with the like-minded Nio García on the social media obsessed “TBT.”