The fifth volume in the Concord Duo Series matches pianist Adam Makowciz and bassist George Mraz in a concert at the Maybeck Recital Hall; both musicians are virtuosoes originally from Eastern Europe who found fame in the U.S. On what is very much a duo set, Mraz gets nearly as much solo space as Makowicz. Their repertoire mixes together six fresh renditions of standards with four of the pianist's complex originals and the harmonically advanced music (which features plenty of close interplay) has enough variety to continually hold one's interest.