The Beatles fans will be glad Paul McCartney didn't listen to his dad's song advice

The Beatles' music is loved by millions of people across the world but it could have sounded different if Paul McCartney's dad had his way. Paul and John Lennon wrote many of the band's iconic early tracks as schoolboys in South Liverpool and would play them to their families at home before performing them on stage.

Paul recalled one of these moments in a clip released to promote Disney's new documentary "Beatles '64", which captures the band's arrival in the United States in February 1964 and will be released on Friday. Produced by Martin Scorsese, the film focuses on the band's famous performance on the Ed Sullivan Show, which was watched by 73m viewers, and the rapid spread of Beatlemania in America.

The documentary also looks at the impact of The Beatles' lyrics and how John and Paul wrote them as young men. Asked about the writing of their early songs, Paul talked about playing 'She Loves You' to his dad at his childhood home on Forthlin Road in Allerton.

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He says: "We’d written the song ‘She Loves You’ in the next room and my dad was in the other room. We came in to play it to him for the first time - 'She loves you, yeah, yeah yeah'."

Paul continued: "At the end of it, he said: ‘boys, it’s very nice but couldn’t you sing ‘She loves you, yes, yes, yes.’ He said: ‘There’s enough of these Americanisms around'."

The band were wise not to follow James McCartney's advice. 'She Loves You' was the best selling single of 1963 and is The Beatles' all-time best selling single in the UK.

It was also one of five Beatles songs which set a record in the USA, holding the top five positions in their charts simultaneously in April 1964. It may not have achieved such huge success without the incredibly catchy 'yeah, yeah, yeah' refrain.

'Yes, yes, yes' just doesn't have quite the same magic.