It's a tight squeeze on Wednesday nights when the Uptown Jazz Orchestra takes the stage at Snug Harbor, but musical director and band co-fou nder Delfeayo Marsalis doesn't mind. "Whatever you have to do," the trombonist says philosophically . After further consideration, he adds. "Squished up is actually better because you can hear what guys are playing. A lot of time, if you're in a situation when you're spread apart you don't really feel the vibration of the music that well." Tonight, the UJO presents very special guest vocalist, New Orleans' own 2015 finalist on NBC's "The Voice," Tonya Boyd-Cannon up front.