Originally airing on PBS, this concert hosted by legendary composer and conductor Marvin Hamlisch celebrates the music of the 1970s. Dust off your pet rock and bell bottoms and groove to unforgettable live performances from the likes of Debby Boone, Three Dog Night, B.J. Thomas, Marilyn McCoo and Billy Davis, Jr., Freda Payne, Ray Stevens, Peaches and Herb, Gloria Gaynor, and others. 80 min. Standard; Soundtrack: English; bonus performances.