by Scott Yanow In June 1954, the Gerry Mulligan Quartet (with the leader/baritonist, valve trombonist Bob Brookmeyer, bassist Red Mitchell and drummer Frank Isola) performed at five all-star concerts, four of which were recorded. Only previously available in fragmented form, the very accessible yet chance-taking music has now been reissued in full on two CDs by the French Vogue label. The second volume is highlighted by "Laura," "Five Brothers," "Love Me or Leave Me," "Line for Lyons" and "Motel," but it is no exaggeration to say that every performance is well worth hearing. Both sets are highly recommended, for this cool-toned but witty and hard-swinging music is very enjoyable.