Still, Peter says it's still a high to see a crowd of fans singing along at his concerts. "The fact that it still happens this many years after I first started is still amazing," he says. "But I always get nervous. The day I don't get nervous before a show, it's time to hang it up, you know, because it's so important to me."
But Peter's not ready to retire yet. "I don't even know how to spell the 'R-word,'" he says.
To keep going, Peter says he's following comedian George Burns' example. "He booked his 100th birthday party. He'd booked at the London Palladium to perform, and that's what kept him going. He made it to 100, [but] he just couldn't quite make the trip [to London]," he says. "As far as I'm concerned, I want to book Madison Square Garden for my 100th."
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