This is undoubtedly the greatest bargain I've ever come across in many years as a CD collector - 2 CD's with 49 of some of the most classic cuts in modern bluegrass for LESS than the price of most single discs.  This is the real stuff, too - J.D. Crowe & The New South, Del McCoury, Country Cooking, Dry Branch Fire Squad, The Bluegrass Album Band, Tony Rice, Jim and Jesse, etc., etc.  If I were going to recommend a first CD to someone interested in exploring bluegrass, this would be it.