I Cross My Heart from the movie Pure Country
George plays a musician who is so fed up with the commercial nature of music he pretends to be a ranch hand, and falls for the rancher's daughter. Because of an unscrupulous music manager, George and his sweetheart have a falling out so he leaves the ranch and goes to Vegas where he opens a show and surreptitiously invites the family (and his girl) to the opening, with front row seats. She is completely unaware that he is the star of the show.
http://www.youtube.com/watch?v=UnFs7SCI3ZM#ws (http://www.youtube.com/watch?v=iY-Z9kdSMXU#ws)