The Beatles’ “Help!” was written specifically for the film of the same name. John Lennon was the primary writer of “Help!” but Paul McCartney said he made changes to it. The tune became a hit twice in the United Kingdom
Many notable people worked together to come up with the title of The Beatles‘ Help!, the Fab Four’s second feature film. Subsequently, Paul McCartney and John Lennon wrote a title song for the movie. Paul revealed his contribution to the song.
In the 1997 book Paul McCartney: Many Years From Now, Paul discussed how the title of The Beatles’ film Help! came about. “I seem to remember [director] Dick Lester, [the band’s manager] Brian Epstein, [producer] Walter Shenson, and ourselves sitting around, maybe [actor] Victor Spinetti was there, and thinking, ‘What are we going to call this one?'” Paul recalled. “Somehow Help! came out. I didn’t suggest it; John might have suggested it or Dick Lester. It was one of them.”
Source: Matthew Trzcinski/cheatsheet.com