If you're a new listener to post-War urban blues, or are unfamiliar with the Chess label and its subsidiaries, you must buy this box set. If, on the other hand, you're like me and your CD and LP collections contain scores of re-issues of individual artists who recorded for Chess, Checker, and the like...you must buy this box set. Do not fear over-duplication. This is no mere collection of the "best of" each artist included in the set, but is a true cross-section of styles and artists recorded during the incredibly important two decades after World War II by the Chess brothers. Major artists--Muddy Waters, Howlin' Wolf, Little Walter, et al--are represented by several songs each, ranging from their earliest to their later recordings. Most impressive, though, is the breadth of artists, major and minor, and the quality of the song selection. From the gritty Robert Nighthawk to the urbane Lloyd Glenn to the soulful Etta James, the creators of this collection have managed to bring together some of the most interesting, moving, and important recordings of the post-War era. Put the discs into your player and you'll hear famous classics like Otis Rush's "So Many Roads, So Many Trains," as well as unnoticed gems like Willie Dixon's "Walking the Blues" (a little gimmicky, but a rare chance to hear some terrific unaccompanied riffs by Lafayette Leake). The quality of the music is almost matched by the very informative booklet, which contains some terrific photos. If you don't want to spend the money on a box set, get someone to buy it for you.