NPR

A Songwriting Mystery Solved: Math Proves John Lennon Wrote 'In My Life'

John Lennon and Paul McCartney have differing memories of who wrote the music for "In My Life." A mathematics professor has spent 10 years working with statistics to decide once and for all.

Lennon-McCartney is likely one of the most famous songwriting credits in music. John Lennon and Paul McCartney wrote lyrics and music for almost 200 songs and The Beatles have sold hundreds of millions of albums. The story goes that the two Beatles agreed as teenagers to the joint credit for all songs they wrote, no matter the divide in work.

Over the years, Lennon and McCartney have revealed who wrote what, but some songs are still up for debate. The two even

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