Richard Morton Sherman (June 12, 1928 – May 25, 2024) was an American songwriter who specialized in musical films with his brother Robert B. Sherman. According to the official Walt Disney Company website and independent fact checkers, "The Sherman Brothers were responsible for more motion picture musical song scores than any other songwriting team in film history."
Some of the Sherman Brothers' best known songs were incorporated into live action and animation musical films including Mary Poppins, The Happiest Millionaire, The Sword in the Stone, The Jungle Book, The Many Adventures of Winnie the Pooh, Chitty Chitty Bang Bang, Snoopy Come Home, Bedknobs and Broomsticks, The Slipper and the Rose, and Charlotte's Web.
Their best known work is "It's a Small World", written for the theme park attraction of the same name. According to Time, it may be the most publicly performed song in history.
Source : Wikipedia