Thugga’s agility and anguish come together in a high-impact performance for the ages. He’s always been lithe, but witness the rapper’s snakelike vocals slide through “Wyclef Jean” and “Swizz Beats,” both built on the subliminal rumbles of dub and dancehall. While he digs into “Future Swag” with wolfish gusto, his fractured croon finds home in the sore-hearted hedonism of “Riri.”