Pianist and composer Lara Downes previews "Rhapsody for This Land: The American Odyssey in Music," a free concert at Brooklyn Bridge Park celebrating the centennials of WNYC and George Gershwin's "Rhapsody in Blue." Produced by St Ann's Warehouse, the show will broadcast live on WNYC starting at 6 PM, July 27, and feature a reimagining of "Rhapsody" from Lara and composer Edmar Colón, plus performances from Rosanne Cash, Arturo O'Farrill, Christian McBride and Time for Three.