Forget about the MJQ's stuffy, professorial image. The could, and did, swing like nobody's business -- especially in concert. First off: drummer Connie Kaye and bassist Percy Heath made up one of the greatest rhythm sections in jazz history. Then, group leader John Lewis' lean, stabbing piano lines build a foundation for Milt Jackson -- the single greatest vibraphonist in history -- to solo on top of. An exciting document from a pigeonholed band.