Katy Perry — Roar

Perry's 2013 empowerment anthem is back across the global charts after a two-month absence, appearing on 24 country and platform charts today. The context is a broader viral resurgence for the singer that Forbes documented last month, with a revived single now standing as the highest-rising hit of her career as she preps new material after a difficult year. The mid-tempo pop-rock construction — a deliberate pivot from the electro-pop of Teenage Dream — has proven unusually durable; its music video crossed 4 billion YouTube views, Billboard reported, the most of any female artist on the platform. This week's re-entry rides that renewed attention rather than any single sync. Watch whether the new single sustains the momentum.