Crystal Gayle is getting a spotlight at Nashville’s Country Music Hall of Fame and Museum.  The singer is the subject of a new exhibit opening Friday.  “Crystal Gayle: When I Dream” uses photos, letters, awards, and other items to tell the Country star’s story, focusing on her rise to fame.  And Crystal will help launch the exhibit with a special appearance this weekend.  For “Concert and Conversation: Crystal Gayle,” the singer will talk about her life and career and perform a selection of hits.  The special program is set for Saturday afternoon at 3:30 p.m., will be streamed live at the museum’s website.  Details are available at CountryMusicHallOfFame.org.  The exhibit will remain open through November 3rd.