The Frog Princess
Some directors made extensive use of this method, while others mixed it with traditional animation as in "The Snow Queen" (1957) by Lev Atamanov, arguably the most famous work of that time. Many focused on animal art with little to no use of rotoscoping. All this allowed for a yearly release of prominent feature films with high production values such as "The Night Before Christmas" (1951), "The Snow Maiden" (1952), "The Enchanted Boy" and "The Frog Princess" (1954), "The Twelve Months" (1956) and "The Adventures of Buratino" (1959).