They have the sky above, the sand below and a song in their hearts. Kathryn Grayson (Kiss Me Kate) and Gordon MacRae (Oklahoma!) capture the romance and splendor of one of the world's great operettas in the ravishing Technicolor treat The Desert Song. The 1926 Sigmund Romberg/Oscar Hammerstein 11 musical adventure has a special place in Warner Bros. history: The studio made three versions, of which this 1953 edition is the last and most lavish. MacRae is the roguish Riff leader - and master of disguise - El Khobar, and Grayson is the reckless French beauty Margot, eventual lovers whose final embrace is preceded by a spectacle packed with hard-riding screen action and soaring melodies. The latter includes "Romance," "The Riff Song," the title tune and "One Alone," which aptly describes this thundering saga. Saddle up and sing The Desert Song. - Anthropologist foils sheik, wows Frenchwoman.