 Among the many albums the label released are the influential early compilation "The Best of Muddy Waters" (1958) and the live "At Newport 1960".After Chess went out of business in 1975, Waters recorded several successful albums for Blue Sky.Produced by blues rock singer and guitarist Johnny Winter, "Hard Again" (1975), "I'm Ready" (1977), and "Muddy "Mississippi" Waters – Live" (1978) won Grammy Awards for "Best Ethnic or Traditional Recordings".