I got a question for you: "A Hard Day's Night" is a song by the English rock band the Beatles. Credited to Lennon -- McCartney, it was written by John Lennon, with some collaboration from Paul McCartney. It was released on the film soundtrack of the same name in 1964. It was also released in the UK as a single, with "Things We Said Today" as its B-side.

Answer this question: who wrote the song a hard day's night?
Let's think first:
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This is the relevant information: Credited to Lennon -- McCartney, it was written by John Lennon, with some collaboration from Paul McCartney.
Therefore, the answer is John Lennon , with some collaboration from Paul McCartney.
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