UNTOLD ONE just added a pop heavyweight to an already stacked lineup. Here’s why this matters. There are announcements, and then there are moments. The news that Zara Larsson will headline UNTOLD ONE this August feels like the latter. Not just because she’s one of the most-streamed female artists on the planet right now, but because she’s never performed in Romania before. Cluj-Napoca, August 6–9 — mark it. A First Time That Feels Long Overdue Zara Larsson needs no introduction to anyone who’s spent time near a speaker in the last decade. “Lush Life,” “Ain’t My Fault,” “Symphony” with Clean Bandit, “Never Forget You” — these are songs that have…