Revisit what many feel was the last golden age for country music in this         documentary that captures the C&W scene at the dawn of the 1970s. Roy Acuff,     Johnny Cash, Loretta Lynn, Bill Monroe, Dolly Parton and Tex Ritter are just     some of the musical legends caught in performance and backstage during the     44th anniversary celebration of the Grand Old Opry.                            Robert Elfstrom/David Hoffman---USA---1970---90 mins.