Lots of people don't know that Maureen O'Hara could sing. In fact, she had a beautiful soprano voice. There was no reason why she wasn't cast in The King and I or any other musical. If you want to hear her sing, you can look up some of her live performances online, or you can find the unknown old flick Bagdad.
The story and casting of Miss O'Hara makes no sense, but if you like Technicolor flicks set in the Arabian desert, you probably won't care. She plays an Arabian princess (yes, I know, with flaming red hair) who has been educated in England and is therefore more "civilized" than the other people in her village. However, when her father gets murdered, she forgets her European education and vows to get revenge. Along the way, she gets involved in a love triangle (because when you're avenging the murder of your father while trying to do your royal duty, you have time to date two men) between Vincent Price and Paul Christian. In the great Hollywood tradition, everyone in the cast is as white as they come, but some of them are made up to look Middle Eastern. Jeff Corey, Frank Puglia, Fritz Leiber, and John Sutton are certainly not from Bagdad. The costumes seem a bit silly, but no one will probably pay attention to them once they see Maureen show off her figure in her intricate outfits. This movie is for fans of hers, but not really for anyone else.