This album features The Dave Brubeck Quartet performing live February 21, 1963, at Carnegie Hall. Among the most popular jazz ensembles in the world at the time—and they had, indeed, been touring internationally since 1958 and topping the jazz magazine readers' polls for years—the Brubeck group's Carnegie Hall concert provided a superb, up-to-the-minute summation of the various facets of their work.