They never worked together, exactly, except when they taped a duet in separate recording sessions, but it's tantalizing to think what it would have been like to have Barbra Streisand and Frank Sinatra together for a concert tour.Just imagine the possibilities. Now in the Las Vegas hit show Barbra and Frank, the rapport of these two 20th century icons is immediately prevalent with outstanding performances by Sharon Owens and Sebastian Anzaldo. As good as the music is, the banter between the stars is equally memorable. The show includes segments in which Streisand and Sinatra create masterful duets and a highlight of the show is a delicate blending of two of their signature songs as Sinatra croons It Was A Very Good Year intertwined with Streisand's memorable The Way We Were. Critics describe the concert as a gem of a show.