James Corden says Kanye West has pulled out of doing Carpool Karaoke twice.
The Late Late Show host is determined to get the Famous hitmaker to appear on the popular segment on his US late night television show and says the 38-year-old rapper is keen to make it happen "eventually".
In an interview with Britain's GQ magazine, he said: "Kanye has been booked to do [it] twice now but both times something came up. He'll do it eventually...He wants to do it."
"[When he canceled he sent] about three dozen white roses, of course. Arranged in the shape of a cube. What could be more Kanye than that?"
Meanwhile, the 37-year-old comedian has set his sights on having R&B superstar Beyonce join him in the car to perform some of her biggest hits.
He said: "It would break the internet. She's on tour right now. We're working on it."
Justin Bieber, Coldplay, One Direction, Adele, Stevie Wonder and One Direction have all had their turn. And James previously admitted doing Carpool Karaoke with Sir Elton John was worth "hundreds of thousands of dollars".
He said: "We did Crocodile Rock, and it's flamboyant. To sing Tiny Dancer with Elton John in a car, you just think: If this was an auction prize, it would go for hundreds of thousands of dollars. I feel lucky every time I get in the car with any of these people who I just really admire and respect."
And the British funnyman thinks his carpool guests have an equally nice time belting out their back catalogues.
Discussing Chris Martin's recent appearance, he said: "After every song he was like, 'Oh, I haven't heard that for ages!' Or, 'It brings me back to where I wrote this'.
"It's actually quite a lovely thing for them to reminisce; they hear their whole career in eight songs."
James feels the segment shows a very different side to his guests.
He said: "There's an ease and an intimacy to it where you'd never ever see stars quite so unguarded.
"I'm different from when I'm doing the show when there's an audience of 200. Seeing a huge megastar sing their hits in the same environment that you and I sing on our way to work - it's humanising."