Johnny Winter does not appear on the albums or the film of the Woodstock Festival. His impression was only made on the 400,000 who were in attendance and witnessed first-hand his incredibly virtuoso performance of scabrous guitar and potent, jagged vocals. From the onset of J.B. Lenoir’s “Mama, Talk to Your Daughter,” the Texas bluesman pulls out all the stops, ripping through fast, angry guitar lines that feature his unforgiving and biting guitar tone. Balanced between originals such as the ferocious “Mean Town Blues” and “Leland Mississippi Blues,” from his self-titled 1969 debut album, here in re-mastered form, and classic covers such as a ten-minute version of J.D. Loudermilk’s “Tobacco Road” and Chuck Berry’s set-closing “Johnny B. Goode,” Winter’s 65-minute performance is among the festival’s most electrifying. His brother Edgar joins him on keyboards for three tracks, including Bo Diddley’s “I Can’t Stand It,” while six of the nine cuts here are previously unreleased. Nearly 15 minutes of “You Done Lost Your Good Thing Now” really brings out the “extended” aspect of the slow blues jam.