The Atlanta rapper’s new track packs a whole vibe into barely 90 seconds. There’s three or four rappers in my regular rotation who I first heard about on Osyris Israel mixes, and one of them is Ghandrx. She didn’t click for me until earlier this year, when I heard her reach a flow state over Gloworm’s 4XL white tee era trap horns on “ Hello Moto .” A few months back, I went to a Bushwick bar to see her perform, but showed up too late and only caught one song, which I could barely make out through a wall as a couple tongued each other down next to me. It still sounded pretty cool, though. The music is more of a vibe anyway. Like her new track, “Fiji,” where she captures the glazed, swagged-out cadence of traditional Atlanta melodies—think something like “ Butta B ”—but chiller.…