Funk. Bop. Forró. Brass. Pounded by calloused hands, blasted from tightened lips, it calls across time and continents, uplifting hearts and moving hips and feet. It’s the force that blew through Louis Armstrong in the twenties. It’s the power that gets Brazilians dancing in the streets for Carnival. It’s the freedom that sets the music on fire. It’s Nation Beat.