Hard-core gospel traditionalists will delight in this 36-track retrospective set of digitally enhanced masters originally recorded in the mid-'50s and '60s. Quite simply, this is the stuff that got her crowned "the World's Greatest Gospel Singer" -- signature hits like "I Found the Answer", "Didn't It Rain," In the Upper Room," and "His Eye Is on the Sparrow." Incorporating a variety of rhythms and styles, from innovative hymns to classic spirituals, the generous selection of tunes fills out the complete picture of her vocal skills and depth. For vintage material, the sound couldn't be better, as Jackson maneuvers the seemingly effortless riffs with spirit-filled abandon -- accompanied on many of the cuts by the renowned Mildred Falls Trio. Among the buried treasure likely to excite diehard church purists is "Nobody Knows the Trouble I've Seen," the Thomas Dorsey classic, "Precious Lord, Take My Hand," "Walk Over God's Heaven," and the jubilant and rousing "Elijah Rock" recorded live during a 1961 performance in Stockholm, Sweden.