He then took the comedian to Liverpool's famous Philharmonic Dining Rooms pub - where James worked behind the bar serving locals, while Paul performed a set including Love Me Do and Hey Jude.
Calling on Paul, the chat show host quoted The Beatles', singing, "I need somebody, not just anybody". I hope you like it.
Shocking the homeowner with an impromptu visit, McCartney shows Corden around the house. "Couldn't you sing she loves you yes, yes, yes?' And we were like, no", said McCartney. Oh, and a little song called "Let It Be".
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And, like the new British royal, Sofia chose to pull her hair back in a low style too, leaving some soft tendrils at the front. When she couldn't remember who is supposed to get in the auto first, Markle just asked the Queen on what her preference is.
The video also saw the legend revisit his childhood home on 20 Fortlin Road, where he told the awesome story of how he and John Lennon wrote She Loves You and played it for his father. "I can remember my granddad, who's a musician, and my dad sitting me down and saying, 'We're going to play you the best song you've ever heard, '" he said.
From Penny Lane to the singer's childhood apartment where Lennon and McCartney wrote some of their most iconic songs, the pair brought viewers on an enlightening and nostalgic journey through the band's iconic history - bringing excited shock and joy to the random people Corden and McCartney met throughout the excursion.
The rocker then explained to James how his mother used to give early Beatles admirers cups of tea, before greeting modern day fans outside his home.
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"If my granddad was here right now, he'd get an absolute kick out of this", Corden tells McCartney, reminiscing on hearing the song back when he was young.
Carpool Karaoke was clearly Corden's breakout, but I like how he's used the segment not as a senseless gag to boost YouTube views, but as a real opportunity to get to know the guests that ride around in the vehicle.
"Hi, I'm Paul McCartney", he said (needlessly) introducing himself to the homeowner.
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Nikki Haley - faces challenges from Haley administration veteran Catherine Templeton, businessman John Warren and others. Nationwide, Democrats are hopeful a "blue wave" of Democratic challengers can upend Republican incumbents in November.