At long last, Muddy's historic 1941-1942 Library of Congress field recordings are all collected in one place, with the best fidelity that's been heard thus far. Waters performs solo pieces (you can hear his slide rattling against the fretboard in spots) and band pieces with the Son Sims Four, "Rosalie" being a virtual blueprint for his later Chicago style. Of particular note are the inclusion of several interview segments with Muddy from that embryonic period and a photo of Muddy playing on the porch of his cabin, dressed up and looking sharper than any Mississippi sharecropper on Stovall's plantation you could possibly imagine. This much more than just an important historical document; this is some really fine music imbued with a sense of place, time and loads of ambience.