Romance on the High Seas (released in the United Kingdom as It's Magic) is a 1948 American musical romantic comedy film directed by Michael Curtiz, and starred Jack Carson, Janis Paige, Don DeFore and Doris Day in her film debut. Busby Berkeley was the choreographer. The film was nominated for two Academy Awards, for Original Song for "It's Magic" (music by Jule Styne, lyrics by Sammy Cahn), and Music, Scoring of a Musical Picture (Ray Heindorf). Plot Elvira Kent (Janis Paige) and her husband Michael (Don DeFore) suspect each other of cheating. For their wedding anniversary, Elvira books an ocean cruise to Rio de Janeiro but her husband claims that unexpected business will prevent him from going. Seeing an opportunity, Elvira pretends to take the trip alone, but in fact sends singer Georgia Garrett (Doris Day), a woman she'd met at the travel agency, in her place and under her name. By secretly staying behind, Elvira hopes to find out if Michael is indeed sneaking around behind her back. Michael, however, is suspicious over Elvira's supposed willingness to go on the trip alone, and so hires private detective Peter Virgil (Jack Carson) to see if she is sneaking around behind his back. Peter joins the cruise and, as part of his job, becomes acquainted with Georgia. Georgia, following the instructions of the real Elvira, keeps up the ruse by pretending to be Elvira to everyone, including Peter. Georgia and Peter are attracted to each other and gradually fall in love, which causes conflict for both of them. During one of the cruise stops, Georgia's friend, Oscar Farrar (Oscar Levant), comes on board. Oscar is in love with Georgia despite Georgia's lack of interest in him, and when Peter spots them together, he thinks he has discovered the identity of Elvira's lover. The film's third act is set in a Rio hotel, where all the principal characters converge and ride a merry-go-round of mistaken identities. Sorting out their true identities, as well as resolving the crossed love plots, concludes the picture. Cast Jack Carson as Peter Virgil Janis Paige as Elvira Kent Don DeFore as Michael Kent Doris Day as Georgia Garrett Oscar Levant as Oscar Farrar S. Z. Sakall as Uncle Lazlo Fortunio Bonanova as Plinio Eric Blore as Ship's Doctor Franklin Pangborn as Rio Hotel Clerk Leslie Brooks as Miss Medwick William Bakewell as Travel Agent John Berkes as