The 68-year-old singer - who penned a track called `When I`m Sixty-Four` with his former band The Beatles - still loves performing and claims music feels as fresh to him as it did when he was first starting out. He said: "Do I feel my age? No. It feels weird to say 68. It`s funny, I wrote the song `When I`m Sixty-Four` when I was in my twenties. I was thinking, `That age will never arrive.` "Now I`m four years after it. "It was always my ambition to plug in my electric guitar, play with some people and write songs and that hasn`t left me. I play the first chord, turn it up loud and it still feels like a rebellious thing to do - playing a bit louder than you should." The veteran rocker also admits he no longer tours as much as he used to because he wants to see more of Beatrice, his six-year-old daughter with ex-wife Heather Mills. He added: "I do a show then I`m off all week. Partly it`s because of my little girl. I`m a hands-on dad and I wouldn`t want to work too much when I`ve got her, so my life has completely changed. "When I go home - that`s the real world."