Trailer for Because You're Mine.
Opera singer superstar Renato Rossano (Mario Lanza) is drafted into the U.S. Army. His Sergeant, "Bat" Batterson (James Whitmore), is an opera fan who admires Rossano and wishes Rossano to appraise his sister's (Doretta Morrow) singing voice. The rest of his platoon as well as the company commander disapproves of Batterson's showing favoritism to Rossano by excusing him from normal training. Rossano also schemes to have Batterson allow him to go to New York, supposedly to have his manager appraise Batterson's sister Brigit's singing voice but in reality allowing him to do a performance.