<P> As the train continues up north, Karen is becoming increasingly cold, so they jump off the train in search of something to keep her warm; Hinkle, noticing their disembarkment, himself jumps off in pursuit . At Frosty's request, Hocus convinces some forest animals who are preparing for Christmas to build a campfire for Karen . Fearing that Karen still cannot survive for long in the cold weather, Frosty asks Hocus who might be able to help them . Hocus suggests (by pantomiming) the President of the United States and the United States Marines, before suggesting Santa Claus . Frosty agrees, and promptly takes credit for the idea himself (much to Hocus' annoyance). Hocus hops off to get Santa, but Hinkle then confronts Frosty and Karen once more and blows out Karen's campfire . Frosty and Karen are again forced to flee, this time with Karen riding on Frosty's back as he slides head - first down a hill (himself made of snow, Frosty is a natural born "belly whopper"). At the bottom of the slope, Karen and Frosty discover a greenhouse filled with Christmas poinsettias . Despite Karen's objections, Frosty steps inside the warm greenhouse with her, suggesting that he could afford to lose a little weight while she warms up . Unfortunately, an angry and vengeful Hinkle catches up to them immediately after and locks them in the greenhouse . </P> <P> By the time Hocus returns with Santa Claus and opens the greenhouse door, Frosty has melted, with a devastated Karen crying over his remains, which lie in a puddle . With a gust of cold wind through the open greenhouse door, the puddle that was Frosty blows out the door and magically changes back into his snowman form . Before Santa can put the hat back on Frosty and bring him back to life, Hinkle arrives on the scene and again demands the return of his hat . He relents only when threatened with being removed from Santa's Christmas list for the rest of his life if he put so much as one finger on the hat . Santa states that if Hinkle is truly repentant for his mean attitude and harming Frosty, and if he goes home and writes "I am really sorry for what I did to Frosty" a hundred zillion times, he may find a gift in his stocking on Christmas morning, which makes Hinkle bid Frosty and Karen farewell and run home to repeatedly write his apologies, assuming he may get a new hat . Finally, Santa then places the magic hat back on top of Frosty's head, and the snowman returns to life . After celebrating, Santa takes Karen home and Frosty to the North Pole, but promises that Frosty will be back next winter . </P> <P> The end credits show all the characters the next Christmas marching through the town square with Frosty in the lead, singing the "Frosty the Snowman" song . Among them is a redeemed Professor Hinkle, who is proudly wearing his new top hat . At the end of the parade, Frosty gets back into Santa's waiting sleigh and they return to the North Pole, with Frosty proclaiming, "I'll be back on Christmas Day!" </P> <Ul> <Li> Jackie Vernon as Frosty </Li> <Li> Jimmy Durante as himself (Narrator) </Li> <Li> June Foray as Karen (original airing), schoolteacher, and Karen's friends (original airing) </Li> <Li> Suzanne Davidson as Karen (later airings, uncredited) </Li> <Li> Billy De Wolfe as Professor Hinkle </Li> <Li> Paul Frees as the traffic cop, ticket man, and Santa Claus </Li> </Ul>

Who sang frosty the snowman in the movie
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