As the buttery-voiced songwriter Girl Ultra, Mexico City's Mariana "Nan" de Miguel sings lush, tender, R&B steeped in sensuality and caressed by slippery Latin, hip-hop, and jazz beats. As part of the Finesse Records talent roster, she collaborated with other artists on the FR label and made a name for herself in CDMX's Boiler Room scene with her covers of tracks by Drake, the Weeknd, and Daniel Caesar. She gained greater attention, however, with her own songs including "Abril," "Duele," and "Ella Tu y Yo." Her 2017 Boys EP established her Latinx-, R&B-drenched grooves interna...