According to Martin Gottfried in his biography of Angela Lansbury, "Balancing Act", she dubbed Ingrid Thulin's voice as a favor to her husband Peter Shaw, then an executive at MGM. Both Lansbury's and Thulin's voices are heard on the soundtrack.
Vincente Minnelli did all he could to sign Alain Delon for the role of Julio, but the producers were set on having an American star in the lead. Glenn Ford was a proven box office star with a working agreement with MGM, so he was hired for $150,000.
Despite heavy promotion by MGM, this film was a critical and financial failure, most critics comparing it unfairly with the silent classic, and Glenn Ford's Julio with that of Rudolph Valentino. Re-appraisals over the years have been rather more kind, and the film is now seen in a better light.