The pair were seen chatting at the Allegiant Stadium in Las Vegas
US singer-songwriter with a soft spot for Tony Bennett
The US lawyer's representation of the former Beatle became a landmark case in immigration law
"I said, ‘Look, I'll show you a few tricks, how to encourage the songs’"
"They sung their little hearts out and they sound biblical"
The BBC Radio 1 legend died earlier this week
He recalled the moment while promoting a new biography
"It had been pointed out to me recently that Hamlet, when he has been poisoned, he actually says, 'Let it be' - act five, scene two"
He also said that McCartney and Starr, as well as all the members’ children, feel like “a big old, weird family”
"I can celebrate it – but also it’s something that’ll always be dark to me"