In another tribute, McCartney performs "Here Today," a song he wrote for John Lennon after his murder in 1980. "Because we're two guys, you don't always say intimate things. In fact, you hardly ever do. You work together... I had this idea it would be nice to say stuff that I really wanted to say to him but somehow put it in a song, so I did this thing called 'Here Today' and it was 'if you were here today, how would it be?...'"

Asked if it's difficult to sing these songs on tour, McCartney replies: "It's sometimes a little bit hard emotionally. You catch yourself and you hear what the lyric means and you suddenly identify with it and choke a bit. I know it's very emotional for the audience, but I like that.

"I'm no longer ashamed of being emotional. When I was 18, that was like the biggest crime a guy could commit. 'You cried?' Well, now it's like, 'Yeah and why not?' It's pretty sad stuff... losing a friend like John or losing (McCartney's first wife) Linda after all those years or George. So I'm comfortable (showing my emotions)." Age has its benefits.

UPDATE
The Smoking Gun has some particulars regarding McCartney's comfort issues on tour:

Paul McCartney is "very fond of flowers," won't travel in a stretch limousine with leather seats, and will not stand for backstage furniture made of any animal skin or print (even if it's of the artificial variety). Those are just a few of the unique provisions contained in the ex-Beatle's concert rider for his 2002 World Tour, excerpts from which you'll find on the following dozen pages. McCartney ... also provides promoters with an amusing list of plant demands, one that concludes with this underlined admonition: "No trees please! We want plants that are just as full on the bottom as the top such as palm, bamboo, peace lilies, etc. No tree trunks!" And, of course, the rider requires a pre-show sweep by some bomb-sniffing dogs and it contains the expected vegan salvo: "There will be no meat, or meat by-products allowed to be served in the dressing rooms, production offices, or areas within the 'backstage area.'"