"Little One" is a song written by Cole Porter for the 1956 film High Society, where it was introduced by Bing Crosby.
Besides Louis Armstrong, the cast included Bing Crosby, Frank Sinatra, Grace Kelly and Celeste Holm.
[1] In the film, Crosby (playing a songwriter) is asked by the young sister of the Grace Kelly character to write a song for her and "Little One" is made up on the spot and sung by Crosby.
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