Every year Piano Night is WWOZ’s flagship Fundraiser between the weekends of Jazz Fest. The OZ Swamp Shop is now offering the 2013 Piano Night 25th Anniversary T-Shirts for NOW available. LIMITED EDITION. The Black Cotton V-Neck, 25th Anniversary Tee has the new OZ logo with Silver Piano Keyboard and date on the front. Modeled by OZ's own Vin Chary who is the show host of Jazz from the French Market every Friday from 4 to 7pm.