In a glass-enclosed space the size of a New York hotel room—which is to say, twice the size of a typical radio studio—TT Torrez works the phones, a blur of jangling bracelets and curly dark hair. “All right, baby girl, thanks for calling in,“ Torrez says as she switches from one caller to the next. “We’ve got Maino in the studio today. You want to talk to him? OK, sweetheart, hold on a second.“