Aged 71 and with all those messy life events in recent years (divorce, money rows etc).
He can step out on stage and deliver a big concert: 2 hours and 45 minutes of hits, less-known songs and new(ish) music.
Swapping guitars, playing piano, gently dancing - the man can do it.
The concert was just the right mix of old and new, with music for Wings fans, and tributes to Lennon and Harrison, chats to the audience in pretty good Japanese and references to the "Fukushima earthquake" and sumo.
It's the end of a gentle world tour (started in May) and Japan is the only Asian country with concerts.
We enjoyed it!!!! Outside Tokyo Dome we were interviewed by TV Asahi. But we said that we aren't really big "fans", and I talked about Paul's bad singing at the Queen's Jubilee in London last year - so I doubt that interview was used.
I have the program, so if you'd like to see it - remember to ask when you come to Imagine for your lesson.
My favorite song? Oh..."Eleanor Rigby"? Or "Here Today", the Lennon tribute song.
And his voice? I was surprised! Actually okay - it makes me wonder why the Queen's Jubilee songs were so bad. This concert: good voice!