Dianne Reeves. The preeminent jazz vocalist of our time — “the most admired jazz diva since the heyday of Sarah Vaughan, Ella Fitzgerald, and Billie Holiday,” says the New York Times — makes her debut at Mason with a program inspired by her exceptional 2004 holiday set Christmas Time is Here, which kicks off with one of the best and certainly sultriest renditions of “Little Drummer Boy” you’ve ever heard.