Sir Paul McCartney brings James Corden to tears as he reveals his late mother Mary inspired Let It Be through a dream in emotional Carpool Karaoke clip

His final single with The Beatles dominated the music charts nearly five decades ago.

And Sir Paul McCartney has shared the origins behind his smash hit Let It Be as the the legendary singer took James Corden on a tour of his stomping ground in Liverpool during the Carpool Karaoke segment of The Late Late Show.

Sending the 39-year-old talk show host into tears, the award-winning pop star, 76, revealed the iconic song was based on a dream about his late mother Mary, who reassured Paul with positivity.

Touching: Sir Paul McCartney has shared the origins behind the legendary singer's smash hit Let It Be during James Corden's The Late Late Show Carpool Karaoke segment in Liverpool

Touching: Sir Paul McCartney has shared the origins behind the legendary singer's smash hit Let It Be during James Corden's The Late Late Show Carpool Karaoke segment in Liverpool

Ecstatic: James Corden was over the moon as he met the Beatles' star in Liverpool 

Ecstatic: James Corden was over the moon as he met the Beatles' star in Liverpool 

During the Liverpool native's tour of the English city, the League Of Their Own star gushed over the track's powerful message on joy and love.

James said: 'The song touches on positivity, joy, love and togetherness, which I think is more relevant today than ever!'

Speaking on the song's long-lasting impact, Paul responded: 'We expected it to last for only 10 years.' 

Welling up: Sending the 39-year-old into tears, the award-winning pop star, 76, sent the 39-year-old into tears as he revealed the iconic song was based on a dream about his late mother

Welling up: Sending the 39-year-old into tears, the award-winning pop star, 76, sent the 39-year-old into tears as he revealed the iconic song was based on a dream about his late mother

Nostalgic: The Yesterday hitmaker (left) went on to discuss his eye-opening dream about his mother Mary (centre), who passed away when Paul was only 14 (pictured with Mike in 1948)

Nostalgic: The Yesterday hitmaker (left) went on to discuss his eye-opening dream about his mother Mary (centre), who passed away when Paul was only 14 (pictured with Mike in 1948)

The Yesterday hitmaker went on to discuss his eye-opening dream about his mother, who passed away when Paul was only 14.

He said: 'I had a dream in the 60s about my mum, who died when I was young. She came to me and reassured me, saying "it's going to be okay, just let it be."  

The belter added: 'I felt so great, she gave me such positive words. She said "let it be", so I wrote the song!'

Inspired: During the Liverpool native's tour of the English city, the League Of Their Own star gushed over the track's powerful message on joy and love 

Inspired: During the Liverpool native's tour of the English city, the League Of Their Own star gushed over the track's powerful message on joy and love 

Details: The Yesterday hitmaker went on to discuss his eye-opening dream about his mother, who passed away when Paul was only 14

Details: The Yesterday hitmaker went on to discuss his eye-opening dream about his mother, who passed away when Paul was only 14

Emotional: The father-of-three burst into tears shortly before stating: 'I remember my granddad and dad playing this song to me, and said "this is the best song you'll ever hear.'

Emotional: The father-of-three burst into tears shortly before stating: 'I remember my granddad and dad playing this song to me, and said "this is the best song you'll ever hear.'

Inside Paul McCartney's childhood home: Macca gives James Corden a guided tour 

Inside Paul McCartney's childhood home: Macca gives James Corden a guided tour 

To the piano: James Corden is taken around the Beatles' star's childhood home before he sits down and gives him a song 

To the piano: James Corden is taken around the Beatles' star's childhood home before he sits down and gives him a song 

The singalong dreams are made of: James Corden tries his best to keep up with Macca 

The singalong dreams are made of: James Corden tries his best to keep up with Macca 

The 76-year-old showed the TV host around his former Liverpool home, not forgetting the music room with drums and a guitar 

The 76-year-old showed the TV host around his former Liverpool home, not forgetting the music room with drums and a guitar 

James Corden visited Paul McCartney's childhood home in Liverpool for this week's show 

James Corden visited Paul McCartney's childhood home in Liverpool for this week's show 

In awe, James responded: 'That's the most beautiful story I've ever heard', before the pair put on an energetic display as they sang the track during their drive around Liverpool. 

Following his rendition of the emotional track, the father-of-three burst into tears shortly before stating: '[When I was young], I remember my granddad and dad playing this song to me, and said "this is the best song you'll ever hear.' 

Indulging in their cosy discussion, James said: 'If my granddad was here, he would get an absolute kick out of this, before Paul sweetly commented: 'He is.'

Having fun: In another segment from the video, the pair visited the songwriter's former barbershop, where he frequently styled his signature mop-top

Having fun: In another segment from the video, the pair visited the songwriter's former barbershop, where he frequently styled his signature mop-top

Trend-setters: Paul (second from left) and his fellow bandmates John Lennon (left), Ringo Starr (second from right) and George Harrison (right) set the style standards during their heydays

Trend-setters: Paul (second from left) and his fellow bandmates John Lennon (left), Ringo Starr (second from right) and George Harrison (right) set the style standards during their heydays

Tapping into the past: James was overwhelmed as Paul gave him a rare glimpse into his childhood home

Tapping into the past: James was overwhelmed as Paul gave him a rare glimpse into his childhood home

In another segment from the video, the pair visited the songwriter's former barbershop, where he frequently styled his signature mop-top.  

In another clip, talk show host James giggled like an excited schoolboy as he belted out the lyrics to the British band's Drive My Car with legendary singer.

Casually-clad Paul put on an animated display as he sang loudly and rocked out with the funnyman in the plush vehicle.

Fan favourite: The icon greeted eager fans during their tour of the English city

Fan favourite: The icon greeted eager fans during their tour of the English city

They can be heard singing: 'Yes, I’m gonna be a star / Baby, you can drive my car / And maybe I’ll love you.' 

Paul and James ended their tour with a surprise gig at the pub, to which many eager fans sang along in high spirits with the stars.

Gushing over the icon, the Peter Rabbit star confessed it was 'mind-blowing' to have the 'most respected musician on the planet' Paul join him for the segment. 

High spirits: James and Paul took a snap by Penny Lane, which inspired The Beatles' chart-topping 1967 hit of the same name

High spirits: James and Paul took a snap by Penny Lane, which inspired The Beatles' chart-topping 1967 hit of the same name

Macca makes his mark by drawing a peace sign on the road sign that inspired the hit song 

Macca makes his mark by drawing a peace sign on the road sign that inspired the hit song 

The pair visited Penny Lane on a trip down memory lane for the Beatles' star (pictured) 

The pair visited Penny Lane on a trip down memory lane for the Beatles' star (pictured) 

James' The Late Late Show has returned to the UK with four special episodes for the second consecutive year, but the funnyman revealed it's not officially an annual tradition yet.

Chris Pratt, Damian Lewis, J.J Abrams, Ruth Wilson, Cate Blanchett, Orlando Bloom, Niall Horan and Cher as well as Andrew Lloyd Webber all participated in UK week, airing on Sky. 

He told USA TODAY: 'It's all memorable. It's kind of insane, if you think about it — you're talking about possibly the most famous person in the world.

Crowd pleasers: The pair ended their tour with a surprise gig at the pub, to which many eager fans sang along in high spirits with the stars

Crowd pleasers: The pair ended their tour with a surprise gig at the pub, to which many eager fans sang along in high spirits with the stars

'He's the most respected musician on the planet, and that he would come to do a segment on our show is mind-blowing to me. 

'He told me a story about how he wrote "Let It Be," which I'd never heard before. It really moved me, so I can't wait to share it with people.'

The final show of the four special episodes airs tonight at 10pm on Sky One and NOW TV.  

Global hit: The Late Late Show has returned to the UK  for the second consecutive year (pictured with Sophie Turner and Dave Grohl on Thursday)

Global hit: The Late Late Show has returned to the UK for the second consecutive year (pictured with Sophie Turner and Dave Grohl on Thursday)

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