Since this is my own introduction to pioneer jazz pianist Powell, I guess I can't tell you "This is a great one-disc sampler of a jazz genius." Read the five reviews posted earlier than mine: two are helpful, one is just plain weird, and two others have complaints which I suppose are valid. All I can say is that I found my copy at a good, nay great, price, and I like it a lot. Bud predates Thelonious and Brubeck and several other favorites of mine, and it is instructive to hear him, and then them. If you like bop piano, done solo or with sparse support, from the post-WW II era, this will suit you. There is one comment by a prior reviewer which I do agree with, but it has nothing to do with Powell: he mentions that the Verve "Ultimate" series, which allows one contemporary jazz artist to select the titles issued by an earlier great, is limited to tracks that Verve owns or has the rights to, and therefore the series is not often truly representative of the player being honored. He also says that Herbie Hancock's results in choosing the songs for the Bill Evans "Ultimate" were not very satisfying. I concur. If you like Bill Evans, another great who came along after Bud Powell, "The Best of Bill Evans on Verve" is far superior to "The Ultimate Bill Evans." Of course, topping both of those CD's are Evans' original albums. Getting back to Powell, I don't know if I will explore his pre-1949 work or not, as at least one reviewer suggests. But if you've read this far with me, I can tell you that this CD has 45 minutes of toe-tappin' late 40's piano on it, all Powell compositions, and therefore, is worth owning.