Celebrate the onset of summer and the anniversary of American independence with the four faces of New Orleans’ Mount Rushmore—Art, Aaron, Charles and Cyril—the Neville Brothers. Since 1954, when Brother Art hit with the ultimate carnival classic “Mardi Gras Mambo,” the Nevilles have been on the scene, solo or as a group. We’ll hear their legacy of soul, funk and R&B as the brothers tell us how it all came to pass, and how the legacy lives on in the next generation with Ivan and Ian Neville. Plus we’re off on a summer road trip to sample Ted Drewes’ Frozen Custard Stand on Route 66 in St. Louis and play Drown the Clown at a Massachusetts county fair. All that and a set of summer music from across the great American soundscape that’ll make you stand and salute.