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Most of the Cinerama productions have been reviewed by various members of our review staff. I reviewed Cinerama's Russian Adventure here, for example, and also did The Best of Cinerama and Holiday in Spain. Just use the search engine at the top of the page to find...
I think the fairy tales are charming, while the Leigh Harline background score is sweet, and the Bob Merrill tunes are appropriately whimsical. The frame story of the brothers themselves is pretty mundane, but the picturesque European locations help abet that somewhat.