TL;DR:
- 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.
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