With a little help from my friend… But how much?

When Mccartney and Lennon began writing songs together as teenagers, they agreed that they should be credited equally. However, after Lennon left The Beatles in 1969 each claimed to have had more input than the other in some songs.

Help! Lennon claimed to have written the song entirely, but Mccartney has estimated he wrote around one third of the melody.

Eleanor Rigby In 1985 Mccartney said Lennon had contributed about “half a line” to the lyrics, although Lennon said he wrote 70 per cent.

Ticket to Ride Mccartney claimed he and Lennon sat down and wrote the song together, but Lennon said Sir Paul only wrote the drum section.

And Your Bird Can Sing While the song is entirely attributed to Lennon, Mccartney claims to have helped with some of the lyrics.