Sir Paul McCartney has enjoyed performing 'FourFiveSeconds' on his 'One On One Tour'.

Sir Paul McCartney

Sir Paul McCartney

The 'Let It Be' hitmaker worked with Kanye West and Rihanna on the song, and has been playing an acoustic version on his 'One On One Tour' in the original key it was written in.

McCartney has found it refreshing playing "something recent" on his set list which is comprised of Beatles classics, solo tracks and songs recorded by his band Wings.

Talking about the song, he said: "I like the grooves that I originally did, and that Kanye must have liked. It was good to take it back to where it started.

"The young people are the ones who really know it. I must admit, I think, 'Oh my God, all the older who are all going to be singing 'Ob-La-Di, Ob-La-Da' are not going to know what this is'.

"They know more than you think. In a show that spans many years, it's good to have something recent."

While the 73-year-old rocker admits that playing new music at his shows usually goes down a "black hole" with fans, he insists that some fans are up for hearing something more "deep cut" and "new".

He told Rolling Stone magazine: "Every band you talk to knows, if you play the old hits, people love it, and all the phones light up so it becomes like a stellar galaxy. When you play the new stuff, it goes like a black hole. I sometimes bust the audience for that, 'We know which ones you like. We can tell.' But we enjoy doing it.

"Even though there's a lot of Beatles fans and Wings fans in the audience, there's still a lot of people who want to hear something different or something new or a little bit of a deep cut. I like to keep them happy too."