Out of the 13 selections included on this double CD, six were originally released just in Europe, two ("Out of Nowhere" and "Mexican Jumping Bean") were never out before and only five songs were on the American LP. Considering how inspired the Dave Brubeck Quartet sounds, it is surprising that the music has been so obscure for so long. Baritonist Gerry Mulligan is particularly heated on the opening two numbers (the unreleased tracks), pianist Dave Brubeck really stretches himself (check him out on "Things Ain't What They Used to Be" where he progresses from stride to free), and bassist Jack Six and drummer Alan Dawson, in addition to their solo space, are quite alert and constantly pushing the lead voices. Not only are the musicians in top form but the audience is very enthusiastic, demanding three encores. The extensive liner notes by Geoffrey Smith are also a major plus. Highly recommended.